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  • ffmpeg seek calculating wrong byte range ?

    12 mars 2020, par user4455

    I’m running into an issue while trying to extract thumbnails from a movie file at a specific timestamp. Generally I’ve had no issues with this, but I’ve come across a set of movie files that are getting an error about the byte range requested (416 Requested Range Not Satisfiable).

    The odd thing is that the server is correctly returning the content length in the partial content request, yet when it requests the movie file it requests a length that exceeds that.

    This is a bit over my head, so I’m not sure what could be happening here. Any insight would be great.

    The Command :

    /usr/bin/ffmpeg -y -ss 1400 -i 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4' -qscale:v 2 -f image2 -vframes 1 -filter:v 'scale=192:108' -loglevel debug /data/www/storage/test.jpg 2>&1

    The Error :

    [https @ 0x22e1e00] header='HTTP/1.1 416 Requested Range Not Satisfiable'
    
[https @ 0x22e1e00] http_code=416
    
[https @ 0x22e1e00] HTTP error 416 Requested Range Not Satisfiable

    Source File Size :

    1776706045 bytes

    Source Content Duration :

    2897.624271

    Partial Content Request :

    [https @ 0x22e1e00] header='HTTP/1.1 206 Partial Content'
    
[https @ 0x22e1e00] http_code=206
    
[https @ 0x22e1e00] header='x-amz-id-2: 4J1pgHExIUA0GxIxSBmGJjrRqliHbsIjXeuGzVfTlaaoVXbyZI5FQNma8fGaifcovkXfxJev5yU='
    
[https @ 0x22e1e00] header='x-amz-request-id: 78B3BDBB0356EF40'
    
[https @ 0x22e1e00] header='Date: Wed, 16 Dec 2015 23:51:29 GMT'
    
[https @ 0x22e1e00] header='x-amz-meta-content-length: 2898'
    
[https @ 0x22e1e00] header='x-amz-meta-cb-modifiedtime: Tue, 15 Dec 2015 17:59:51 GMT'
    
[https @ 0x22e1e00] header='Last-Modified: Wed, 16 Dec 2015 23:44:59 GMT'
    
[https @ 0x22e1e00] header='ETag: "6341a8022630667a8070a83575e542e7-27"'
    
[https @ 0x22e1e00] header='Accept-Ranges: bytes'
    
[https @ 0x22e1e00] header='Content-Range: bytes 0-1776706044/1776706045'
    
[https @ 0x22e1e00] header='Content-Type: video/mp4'
    
[https @ 0x22e1e00] header='Content-Length: 1776706045'
    
[https @ 0x22e1e00] header='Server: AmazonS3'
    
[https @ 0x22e1e00] header='Connection: close'

    FFmpeg Request :

    request: GET /my-bucket/mymoviefile.mp4 HTTP/1.1
    
User-Agent: Lavf/56.25.101
    
Accept: */*
    
Range: bytes=1781732960-
    
Connection: close
    
Host: s3-us-west-2.amazonaws.com
    
Icy-MetaData: 1

    Entire Log :

    # /usr/bin/ffmpeg -y -ss 1400 -i 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4' -qscale:v 2 -f image2 -vframes 1 -filter:v 'scale=192:108' -loglevel debug /data/www/storage/test.jpg 2>&1
    
ffmpeg version 2.6.4 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.9.2 (Debian 4.9.2-10)
    
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-vaapi --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/x86_64-linux-gnu
    
  libavutil      54. 20.100 / 54. 20.100
    
  libavcodec     56. 26.100 / 56. 26.100
    
  libavformat    56. 25.101 / 56. 25.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 11.102 /  5. 11.102
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Splitting the commandline.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '1400'.
    
Reading option '-i' ... matched as input file with argument 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4'.
    
Reading option '-qscale:v' ... matched as option 'qscale' (use fixed quality scale (VBR)) with argument '2'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'image2'.
    
Reading option '-vframes' ... matched as option 'vframes' (set the number of video frames to output) with argument '1'.
    
Reading option '-filter:v' ... matched as option 'filter' (set stream filtergraph) with argument 'scale=192:108'.
    
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
    
Reading option '/data/www/storage/test.jpg' ... matched as output file.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option y (overwrite output files) with argument 1.
    
Applying option loglevel (set logging level) with argument debug.
    
Successfully parsed a group of options.
    
Parsing a group of options: input file https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4.
    
Applying option ss (set the start time offset) with argument 1400.
    
Successfully parsed a group of options.
    
Opening an input file: https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4.
    
[https @ 0x22e1e00] request: GET /my-bucket/mymoviefile.mp4 HTTP/1.1
    
User-Agent: Lavf/56.25.101
    
Accept: */*
    
Range: bytes=0-
    
Connection: close
    
Host: s3-us-west-2.amazonaws.com
    
Icy-MetaData: 1
    

    

    
[https @ 0x22e1e00] header='HTTP/1.1 206 Partial Content'
    
[https @ 0x22e1e00] http_code=206
    
[https @ 0x22e1e00] header='x-amz-id-2: 4J1pgHExIUA0GxIxSBmGJjrRqliHbsIjXeuGzVfTlaaoVXbyZI5FQNma8fGaifcovkXfxJev5yU='
    
[https @ 0x22e1e00] header='x-amz-request-id: 78B3BDBB0356EF40'
    
[https @ 0x22e1e00] header='Date: Wed, 16 Dec 2015 23:51:29 GMT'
    
[https @ 0x22e1e00] header='x-amz-meta-content-length: 2898'
    
[https @ 0x22e1e00] header='x-amz-meta-cb-modifiedtime: Tue, 15 Dec 2015 17:59:51 GMT'
    
[https @ 0x22e1e00] header='Last-Modified: Wed, 16 Dec 2015 23:44:59 GMT'
    
[https @ 0x22e1e00] header='ETag: "6341a8022630667a8070a83575e542e7-27"'
    
[https @ 0x22e1e00] header='Accept-Ranges: bytes'
    
[https @ 0x22e1e00] header='Content-Range: bytes 0-1776706044/1776706045'
    
[https @ 0x22e1e00] header='Content-Type: video/mp4'
    
[https @ 0x22e1e00] header='Content-Length: 1776706045'
    
[https @ 0x22e1e00] header='Server: AmazonS3'
    
[https @ 0x22e1e00] header='Connection: close'
    
[https @ 0x22e1e00] header=''
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] ISO: File Type Major Brand: mp42
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] Before avformat_find_stream_info() pos: 1647960 bytes read:1652200 seeks:0
    
[h264 @ 0x22e92c0] no picture
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] All info found
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] After avformat_find_stream_info() pos: 1862326 bytes read:1878504 seeks:0 frames:16
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 1
    
    compatible_brands: isommp41avc1
    
    creation_time   : 2015-11-18 02:34:41
    
  Duration: 00:48:17.70, start: 0.000000, bitrate: 4905 kb/s
    
    Stream #0:0(und), 15, 1/2997: Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, left), 1920x1080 (1920x1088) [SAR 1:1 DAR 16:9], 1001/60000, 9994 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc (default)
    
    Metadata:
    
      creation_time   : 2015-11-18 02:34:41
    
      handler_name    : ?Apple Video Media Handler
    
    Stream #0:1(und), 1, 1/48000: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
    
    Metadata:
    
      creation_time   : 2015-11-18 02:34:41
    
      handler_name    : ?Apple Sound Media Handler
    
Successfully opened the file.
    
Parsing a group of options: output file /data/www/storage/test.jpg.
    
Applying option qscale:v (use fixed quality scale (VBR)) with argument 2.
    
Applying option f (force format) with argument image2.
    
Applying option vframes (set the number of video frames to output) with argument 1.
    
Applying option filter:v (set stream filtergraph) with argument scale=192:108.
    
Successfully parsed a group of options.
    
Opening an output file: /data/www/storage/test.jpg.
    
Successfully opened the file.
    
detected 2 logical cores
    
[Parsed_scale_0 @ 0x22cd4c0] Setting 'w' to value '192'
    
[Parsed_scale_0 @ 0x22cd4c0] Setting 'h' to value '108'
    
[Parsed_scale_0 @ 0x22cd4c0] Setting 'flags' to value '0x4'
    
[Parsed_scale_0 @ 0x22cd4c0] w:192 h:108 flags:'0x4' interl:0
    
[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'video_size' to value '1920x1080'
    
[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'pix_fmt' to value '0'
    
[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'time_base' to value '1/2997'
    
[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'pixel_aspect' to value '1/1'
    
[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'sws_param' to value 'flags=2'
    
[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'frame_rate' to value '2997/100'
    
[graph 0 input from stream 0:0 @ 0x22ccfe0] w:1920 h:1080 pixfmt:yuv420p tb:1/2997 fr:2997/100 sar:1/1 sws_param:flags=2
    
[format @ 0x2798640] compat: called with args=[yuvj420p|yuvj422p|yuvj444p]
    
[format @ 0x2798640] Setting 'pix_fmts' to value 'yuvj420p|yuvj422p|yuvj444p'
    
[AVFilterGraph @ 0x22cda60] query_formats: 5 queried, 4 merged, 0 already done, 0 delayed
    
[Parsed_scale_0 @ 0x22cd4c0] picking yuvj420p out of 3 ref:yuv420p alpha:0
    
[swscaler @ 0x22c3c80] deprecated pixel format used, make sure you did set range correctly
    
[Parsed_scale_0 @ 0x22cd4c0] w:1920 h:1080 fmt:yuv420p sar:1/1 -> w:192 h:108 fmt:yuvj420p sar:1/1 flags:0x4
    
[mjpeg @ 0x2854e20] intra_quant_bias = 96 inter_quant_bias = 0
    
[mjpeg @ 0x28716c0] intra_quant_bias = 96 inter_quant_bias = 0
    
[mjpeg @ 0x2795320] intra_quant_bias = 96 inter_quant_bias = 0
    
Output #0, image2, to '/data/www/storage/test.jpg':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 1
    
    compatible_brands: isommp41avc1
    
    encoder         : Lavf56.25.101
    
    Stream #0:0(und), 0, 100/2997: Video: mjpeg, yuvj420p(pc, left), 192x108 [SAR 1:1 DAR 16:9], 100/2997, q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)
    
    Metadata:
    
      creation_time   : 2015-11-18 02:34:41
    
      handler_name    : ?Apple Video Media Handler
    
      encoder         : Lavc56.26.100 mjpeg
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
    
Press [q] to stop, [?] for help
    
[https @ 0x22e1e00] request: GET /my-bucket/mymoviefile.mp4 HTTP/1.1
    
User-Agent: Lavf/56.25.101
    
Accept: */*
    
Range: bytes=1781732960-
    
Connection: close
    
Host: s3-us-west-2.amazonaws.com
    
Icy-MetaData: 1
    

    

    
[https @ 0x22e1e00] header='HTTP/1.1 416 Requested Range Not Satisfiable'
    
[https @ 0x22e1e00] http_code=416
    
[https @ 0x22e1e00] HTTP error 416 Requested Range Not Satisfiable
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] stream 0, offset 0x6a331660: partial file
    
https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4: Invalid data found when processing input
    
[output stream 0:0 @ 0x22d7500] EOF on sink link output stream 0:0:default.
    
No more output streams to write to, finishing.
    
frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A
    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Input file #0 (https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4):
    
  Input stream #0:0 (video): 0 packets read (0 bytes); 0 frames decoded;
    
  Input stream #0:1 (audio): 0 packets read (0 bytes);
    
  Total: 0 packets (0 bytes) demuxed
    
Output file #0 (/data/www/storage/test.jpg):
    
  Output stream #0:0 (video): 0 frames encoded; 0 packets muxed (0 bytes);
    
  Total: 0 packets (0 bytes) muxed
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
    
0 frames successfully decoded, 0 decoding errors
    
[AVIOContext @ 0x27ab100] Statistics: 1878504 bytes read, 0 seeks

    FFprobe Result :

    # /usr/bin/ffprobe -show_format -show_streams -i 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4'
    
ffprobe version 2.6.4 Copyright (c) 2007-2015 the FFmpeg developers
    
  built with gcc 4.9.2 (Debian 4.9.2-10)
    
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-vaapi --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/x86_64-linux-gnu
    
  libavutil      54. 20.100 / 54. 20.100
    
  libavcodec     56. 26.100 / 56. 26.100
    
  libavformat    56. 25.101 / 56. 25.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 11.102 /  5. 11.102
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 1
    
    compatible_brands: isommp41avc1
    
    creation_time   : 2015-11-18 02:34:41
    
  Duration: 00:48:17.70, start: 0.000000, bitrate: 4905 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], 9994 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc (default)
    
    Metadata:
    
      creation_time   : 2015-11-18 02:34:41
    
      handler_name    : ?Apple Video Media Handler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
    
    Metadata:
    
      creation_time   : 2015-11-18 02:34:41
    
      handler_name    : ?Apple Sound Media Handler
    
[STREAM]
    
index=0
    
codec_name=h264
    
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
profile=High
    
codec_type=video
    
codec_time_base=1001/60000
    
codec_tag_string=avc1
    
codec_tag=0x31637661
    
width=1920
    
height=1080
    
has_b_frames=1
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=16:9
    
pix_fmt=yuv420p
    
level=40
    
color_range=tv
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=left
    
timecode=N/A
    
refs=3
    
is_avc=1
    
nal_length_size=4
    
id=N/A
    
r_frame_rate=2997/100
    
avg_frame_rate=2997/100
    
time_base=1/2997
    
start_pts=0
    
start_time=0.000000
    
duration_ts=8684300
    
duration=2897.664331
    
bit_rate=9994429
    
max_bit_rate=N/A
    
bits_per_raw_sample=8
    
nb_frames=86843
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
TAG:creation_time=2015-11-18 02:34:41
    
TAG:language=und
    
TAG:handler_name=Apple Video Media Handler
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=aac
    
codec_long_name=AAC (Advanced Audio Coding)
    
profile=LC
    
codec_type=audio
    
codec_time_base=1/48000
    
codec_tag_string=mp4a
    
codec_tag=0x6134706d
    
sample_fmt=fltp
    
sample_rate=48000
    
channels=2
    
channel_layout=stereo
    
bits_per_sample=0
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/48000
    
start_pts=0
    
start_time=0.000000
    
duration_ts=139085965
    
duration=2897.624271
    
bit_rate=192002
    
max_bit_rate=N/A
    
bits_per_raw_sample=N/A
    
nb_frames=135828
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
TAG:creation_time=2015-11-18 02:34:41
    
TAG:language=und
    
TAG:handler_name=Apple Sound Media Handler
    
[/STREAM]
    
[FORMAT]
    
filename=https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4
    
nb_streams=2
    
nb_programs=0
    
format_name=mov,mp4,m4a,3gp,3g2,mj2
    
format_long_name=QuickTime / MOV
    
start_time=0.000000
    
duration=2897.695000
    
size=1776706045
    
bit_rate=4905156
    
probe_score=100
    
TAG:major_brand=mp42
    
TAG:minor_version=1
    
TAG:compatible_brands=isommp41avc1
    
TAG:creation_time=2015-11-18 02:34:41
    
[/FORMAT]

  • FFMPEG process Killed and raises returncode 137 when executed through python3 subprocess.Popen but runs fine from the command line

    22 novembre 2017, par Stuart Clarke

    I’m not sure if this is the best way to go about this, but I have another question here which I don’t think was asked very well (or more to the point I realised the actual problem and have a simpler way of asking for help). If you can answer this question you’ll have the answer to the other.

    I’m using python 3.5.2 and ffmpeg 3.3.4-2 and have this function to run my ffmpeg commands :

    def ffmpegPro(args):
    
    err = None
    
    for i, arg in enumerate(args):
    
        if(" " in arg or "(" in arg or "[" in arg):
    
            args[i] = "\"" + arg + "\""
    
    command = [
    
        ffmpegcmd, '-y',
    
        '-loglevel', loglevel
    
    ] + args
    
    commandStr = " ".join(command)
    
    ffmpeg = subprocess.Popen(commandStr, stdin=subprocess.PIPE, stderr=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=True, shell=True)
    
    out, err = ffmpeg.communicate()
    
    if ffmpeg.returncode != 0:
    
        print(commandStr + "\n" + "ERROR CODE: " + str(ffmpeg.returncode))
    
        raise Exception(err)

    When I pass the following args the returncode is 137 and the process is Killed. This only occurs when executed in python, when I run the same command at the command line it executes as expected.

    ['-i', '/var/www/temp/film.mp4', '-vf', 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black', '/var/www/temp/videoHD.mp4']

    The resulting command is :

    ffmpeg -y -loglevel verbose -i /var/www/temp/film.mp4 -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black" /var/www/temp/videoHD.mp4

    When executed through python :

    ERROR CODE: 137
    
Traceback (most recent call last):
    
  File "getInsta2.py", line 740, in <module>
    
    populate(media_feed, last, saved)
    
  File "getInsta2.py", line 679, in populate
    
    videoPost(media, hasVids, thisSaved)
    
  File "getInsta2.py", line 639, in videoPost
    
    processVideo(film, final, noMusic, audios, lengths)
    
  File "getInsta2.py", line 358, in processVideo
    
    ffmpegPro(args)
    
  File "getInsta2.py", line 170, in ffmpegPro
    
    raise Exception(err)
    
Exception: ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 58.100 / 55. 58.100
    
  libavcodec     57. 89.100 / 57. 89.100
    
  libavformat    57. 71.100 / 57. 71.100
    
  libavdevice    57.  6.100 / 57.  6.100
    
  libavfilter     6. 82.100 /  6. 82.100
    
  libavresample   3.  5.  0 /  3.  5.  0
    
  libswscale      4.  6.100 /  4.  6.100
    
  libswresample   2.  7.100 /  2.  7.100
    
  libpostproc    54.  5.100 / 54.  5.100
    
[h264 @ 0x7fa3db55a560] Reinit context to 640x368, pix_fmt: yuv420p
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
    
    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[h264 @ 0x7fa3db59c700] Reinit context to 640x368, pix_fmt: yuv420p
    
[graph_1_in_0_1 @ 0x7fa3db7115e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
    
[Parsed_scale_0 @ 0x7fa3db72e000] w:1920 h:1080 flags:'bicubic' interl:0
    
[graph 0 input from stream 0:0 @ 0x7fa3db72f6a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
    
[Parsed_scale_0 @ 0x7fa3db72e000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
    
[Parsed_pad_1 @ 0x7fa3db72eac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
    
[libx264 @ 0x7fa3db7309e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7fa3db7309e0] profile High, level 4.0
    
[libx264 @ 0x7fa3db7309e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/var/www/temp/videoHD.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.89.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.89.100 aac
    
Killed
    
</module>

    Note the Killed at the end. This occurs just before any processing begins.

    BUT when run from the command line (cutting and pasting the command as outputted by the code) we get :

    ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 58.100 / 55. 58.100
    
  libavcodec     57. 89.100 / 57. 89.100
    
  libavformat    57. 71.100 / 57. 71.100
    
  libavdevice    57.  6.100 / 57.  6.100
    
  libavfilter     6. 82.100 /  6. 82.100
    
  libavresample   3.  5.  0 /  3.  5.  0
    
  libswscale      4.  6.100 /  4.  6.100
    
  libswresample   2.  7.100 /  2.  7.100
    
  libpostproc    54.  5.100 / 54.  5.100
    
[h264 @ 0x7f68c918f560] Reinit context to 640x368, pix_fmt: yuv420p
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
    
    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[h264 @ 0x7f68c91d1700] Reinit context to 640x368, pix_fmt: yuv420p
    
[graph_1_in_0_1 @ 0x7f68c93465e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
    
[Parsed_scale_0 @ 0x7f68c9363000] w:1920 h:1080 flags:'bicubic' interl:0
    
[graph 0 input from stream 0:0 @ 0x7f68c93646a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
    
[Parsed_scale_0 @ 0x7f68c9363000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
    
[Parsed_pad_1 @ 0x7f68c9363ac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
    
[libx264 @ 0x7f68c93659e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7f68c93659e0] profile High, level 4.0
    
[libx264 @ 0x7f68c93659e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/var/www/temp/videoHD.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.89.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.89.100 aac
    
frame=   46 fps=0.0 q=0.0 size=       0kB time=00:00:01.62 bitrate=   0.0kbits/s
    
frame=   59 fps= 46 q=29.0 size=     116kB time=00:00:02.04 bitrate= 464.8kbits/
    
frame=   72 fps= 40 q=29.0 size=     203kB time=00:00:02.49 bitrate= 667.2kbits/
    
frame=   84 fps= 36 q=29.0 size=     308kB time=00:00:02.88 bitrate= 875.9kbits/
    
    Blah
    
    Blah
    
    Blah
    
frame=11351 fps= 21 q=26.0 size=   97572kB time=00:06:18.45 bitrate=2112.1kbits/
    
frame=11367 fps= 21 q=29.0 size=   97732kB time=00:06:18.98 bitrate=2112.5kbits/
    
frame=11384 fps= 22 q=29.0 size=   97809kB time=00:06:19.56 bitrate=2111.0kbits/
    
No more output streams to write to, finishing.
    
frame=11392 fps= 21 q=-1.0 Lsize=   98519kB time=00:06:19.77 bitrate=2125.1kbits/s speed=0.715x    
    
video:92124kB audio:5986kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.416313%
    
Input file #0 (/var/www/temp/film.mp4):
    
  Input stream #0:0 (video): 11392 packets read (14892948 bytes); 11392 frames decoded; 
    
  Input stream #0:1 (audio): 17803 packets read (6112540 bytes); 17802 frames decoded (18229248 samples); 
    
  Total: 29195 packets (21005488 bytes) demuxed
    
Output file #0 (/var/www/temp/videoHD.mp4):
    
  Output stream #0:0 (video): 11392 frames encoded; 11392 packets muxed (94334785 bytes); 
    
  Output stream #0:1 (audio): 17802 frames encoded (18229248 samples); 17803 packets muxed (6129981 bytes); 
    
  Total: 29195 packets (100464766 bytes) muxed
    
[libx264 @ 0x7f68c93659e0] frame I:74    Avg QP:19.08  size: 51540
    
[libx264 @ 0x7f68c93659e0] frame P:3506  Avg QP:21.34  size: 19348
    
[libx264 @ 0x7f68c93659e0] frame B:7812  Avg QP:24.07  size:  2904
    
[libx264 @ 0x7f68c93659e0] consecutive B-frames:  1.3% 20.2%  4.6% 73.9%
    
[libx264 @ 0x7f68c93659e0] mb I  I16..4: 19.7% 73.6%  6.7%
    
[libx264 @ 0x7f68c93659e0] mb P  I16..4:  3.2%  6.4%  0.1%  P16..4: 52.5%  7.6%  2.6%  0.0%  0.0%    skip:27.6%
    
[libx264 @ 0x7f68c93659e0] mb B  I16..4:  0.2%  0.2%  0.0%  B16..8: 23.2%  0.4%  0.0%  direct: 0.5%  skip:75.5%  L0:51.8% L1:46.6% BI: 1.6%
    
[libx264 @ 0x7f68c93659e0] 8x8 transform intra:66.4% inter:94.0%
    
[libx264 @ 0x7f68c93659e0] coded y,uvDC,uvAC intra: 33.6% 53.4% 7.3% inter: 5.3% 14.2% 0.0%
    
[libx264 @ 0x7f68c93659e0] i16 v,h,dc,p: 22% 27%  5% 46%
    
[libx264 @ 0x7f68c93659e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 19% 20%  4%  7%  7%  7%  5%  4%
    
[libx264 @ 0x7f68c93659e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 28% 11%  3%  9%  7%  6%  3%  2%
    
[libx264 @ 0x7f68c93659e0] i8c dc,h,v,p: 49% 21% 20% 10%
    
[libx264 @ 0x7f68c93659e0] Weighted P-Frames: Y:0.5% UV:0.1%
    
[libx264 @ 0x7f68c93659e0] ref P L0: 63.4%  8.9% 21.4%  6.3%  0.0%
    
[libx264 @ 0x7f68c93659e0] ref B L0: 89.3%  9.1%  1.6%
    
[libx264 @ 0x7f68c93659e0] ref B L1: 98.1%  1.9%
    
[libx264 @ 0x7f68c93659e0] kb/s:1987.38
    
[aac @ 0x7f68c9366e80] Qavg: 1160.814

    and the output video is fine.

    Why would this process be killed by python ?

    Thanks,

    Stu

  • FFMPEG not working from Python subprocess.Popen but works from command line

    21 novembre 2017, par Stuart Clarke

    I’m trying to run a FFMPEG script from within python 3.5.2. the FFMPEG command runs fine from the command line but fails within the python script.

    The function I use to execute the FFMPEG command is

    def ffmpeg(args):
    
    err = None
    
    command = [
    
        ffmpegcmd, '-y',
    
        '-loglevel', loglevel
    
    ] + args
    
    print("\n\n\n")
    
    print(command)
    
    print("\n\n\n")
    
    print(" ".join(command))
    
    ffmpeg = subprocess.Popen(command, stderr=subprocess.PIPE ,stdout=subprocess.PIPE, universal_newlines=True)
    
    while err == None:
    
        out, err = ffmpeg.communicate()
    
        time.sleep(1)
    
    if err and loglevel=='fatal':
    
        print(" ".join(command))
    
        raise Exception(err)
    
    print(err)

    The value for args is :

    ['-i', '/var/www/temp/film.mp4', '-vf', 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black', '/var/www/temp/videoHD.mp4']

    such that the resultant command being passed to subprocess.Popen is :

    ['ffmpeg', '-y', '-loglevel', 'verbose', '-i', '/var/www/temp/film.mp4', '-vf', 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black', '/var/www/temp/videoHD.mp4']

    The value of loglevel is verbose only for troubleshooting but is intended to run as fatal. There are also some print commands only in place for troubleshooting.

    The reason for wanting to increase the resolution is so that it can be combined later with higher resolution videos.

    The result when running from within python is :

    ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 58.100 / 55. 58.100
    
  libavcodec     57. 89.100 / 57. 89.100
    
  libavformat    57. 71.100 / 57. 71.100
    
  libavdevice    57.  6.100 / 57.  6.100
    
  libavfilter     6. 82.100 /  6. 82.100
    
  libavresample   3.  5.  0 /  3.  5.  0
    
  libswscale      4.  6.100 /  4.  6.100
    
  libswresample   2.  7.100 /  2.  7.100
    
  libpostproc    54.  5.100 / 54.  5.100
    
[h264 @ 0x7f741a37a560] Reinit context to 640x368, pix_fmt: yuv420p
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
    
    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[h264 @ 0x7f741a3bc700] Reinit context to 640x368, pix_fmt: yuv420p
    
[graph_1_in_0_1 @ 0x7f741a5315e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
    
[Parsed_scale_0 @ 0x7f741a54e000] w:1920 h:1080 flags:'bicubic' interl:0
    
[graph 0 input from stream 0:0 @ 0x7f741a54f6a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
    
[Parsed_scale_0 @ 0x7f741a54e000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
    
[Parsed_pad_1 @ 0x7f741a54eac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
    
[libx264 @ 0x7f741a5509e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7f741a5509e0] profile High, level 4.0
    
[libx264 @ 0x7f741a5509e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/var/www/temp/videoHD.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.89.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.89.100 aac

    This results in a file with no content.

    When I run the command from the command line I need to add single quotes around the -vf video filters scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black so the whole command becomes :

    ffmpeg -y -loglevel verbose -i /var/www/temp/film.mp4 -vf 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black' /var/www/temp/videoHD.mp4

    Running this command gives the required result.

    ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 58.100 / 55. 58.100
    
  libavcodec     57. 89.100 / 57. 89.100
    
  libavformat    57. 71.100 / 57. 71.100
    
  libavdevice    57.  6.100 / 57.  6.100
    
  libavfilter     6. 82.100 /  6. 82.100
    
  libavresample   3.  5.  0 /  3.  5.  0
    
  libswscale      4.  6.100 /  4.  6.100
    
  libswresample   2.  7.100 /  2.  7.100
    
  libpostproc    54.  5.100 / 54.  5.100
    
[h264 @ 0x7f3a55c17560] Reinit context to 640x368, pix_fmt: yuv420p
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
    
    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[h264 @ 0x7f3a55c59700] Reinit context to 640x368, pix_fmt: yuv420p
    
[graph_1_in_0_1 @ 0x7f3a55dce5e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
    
[Parsed_scale_0 @ 0x7f3a55deb000] w:1920 h:1080 flags:'bicubic' interl:0
    
[graph 0 input from stream 0:0 @ 0x7f3a55dec6a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
    
[Parsed_scale_0 @ 0x7f3a55deb000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
    
[Parsed_pad_1 @ 0x7f3a55debac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
    
[libx264 @ 0x7f3a55ded9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7f3a55ded9e0] profile High, level 4.0
    
[libx264 @ 0x7f3a55ded9e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/var/www/temp/videoHD.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.89.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.89.100 aac
    
frame=   46 fps=0.0 q=0.0 size=       0kB time=00:00:01.62 bitrate=   0.0kbits/s
    
frame=   59 fps= 47 q=29.0 size=     116kB time=00:00:02.04 bitrate= 464.8kbits/
    
frame=   74 fps= 41 q=29.0 size=     223kB time=00:00:02.56 bitrate= 714.8kbits/
    
frame=   87 fps= 35 q=29.0 size=     344kB time=00:00:02.98 bitrate= 942.4kbits/
    
frame=   98 fps= 33 q=29.0 size=     427kB time=00:00:03.34 bitrate=1043.4kbits/
    
    blah
    
    blah
    
    blah
    
frame=11347 fps= 21 q=29.0 size=   97550kB time=00:06:18.32 bitrate=2112.3kbits/
    
frame=11363 fps= 21 q=29.0 size=   97713kB time=00:06:18.85 bitrate=2112.8kbits/
    
frame=11380 fps= 21 q=29.0 size=   97795kB time=00:06:19.41 bitrate=2111.5kbits/
    
No more output streams to write to, finishing.
    
frame=11392 fps= 21 q=-1.0 Lsize=   98519kB time=00:06:19.77 bitrate=2125.1kbits/s speed=0.69x    
    
video:92124kB audio:5986kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.416313%
    
Input file #0 (/var/www/temp/film.mp4):
    
  Input stream #0:0 (video): 11392 packets read (14892948 bytes); 11392 frames decoded; 
    
  Input stream #0:1 (audio): 17803 packets read (6112540 bytes); 17802 frames decoded (18229248 samples); 
    
  Total: 29195 packets (21005488 bytes) demuxed
    
Output file #0 (/var/www/temp/videoHD.mp4):
    
  Output stream #0:0 (video): 11392 frames encoded; 11392 packets muxed (94334785 bytes); 
    
  Output stream #0:1 (audio): 17802 frames encoded (18229248 samples); 17803 packets muxed (6129981 bytes); 
    
  Total: 29195 packets (100464766 bytes) muxed
    
[libx264 @ 0x7f3a55ded9e0] frame I:74    Avg QP:19.08  size: 51540
    
[libx264 @ 0x7f3a55ded9e0] frame P:3506  Avg QP:21.34  size: 19348
    
[libx264 @ 0x7f3a55ded9e0] frame B:7812  Avg QP:24.07  size:  2904
    
[libx264 @ 0x7f3a55ded9e0] consecutive B-frames:  1.3% 20.2%  4.6% 73.9%
    
[libx264 @ 0x7f3a55ded9e0] mb I  I16..4: 19.7% 73.6%  6.7%
    
[libx264 @ 0x7f3a55ded9e0] mb P  I16..4:  3.2%  6.4%  0.1%  P16..4: 52.5%  7.6%  2.6%  0.0%  0.0%    skip:27.6%
    
[libx264 @ 0x7f3a55ded9e0] mb B  I16..4:  0.2%  0.2%  0.0%  B16..8: 23.2%  0.4%  0.0%  direct: 0.5%  skip:75.5%  L0:51.8% L1:46.6% BI: 1.6%
    
[libx264 @ 0x7f3a55ded9e0] 8x8 transform intra:66.4% inter:94.0%
    
[libx264 @ 0x7f3a55ded9e0] coded y,uvDC,uvAC intra: 33.6% 53.4% 7.3% inter: 5.3% 14.2% 0.0%
    
[libx264 @ 0x7f3a55ded9e0] i16 v,h,dc,p: 22% 27%  5% 46%
    
[libx264 @ 0x7f3a55ded9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 19% 20%  4%  7%  7%  7%  5%  4%
    
[libx264 @ 0x7f3a55ded9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 28% 11%  3%  9%  7%  6%  3%  2%
    
[libx264 @ 0x7f3a55ded9e0] i8c dc,h,v,p: 49% 21% 20% 10%
    
[libx264 @ 0x7f3a55ded9e0] Weighted P-Frames: Y:0.5% UV:0.1%
    
[libx264 @ 0x7f3a55ded9e0] ref P L0: 63.4%  8.9% 21.4%  6.3%  0.0%
    
[libx264 @ 0x7f3a55ded9e0] ref B L0: 89.3%  9.1%  1.6%
    
[libx264 @ 0x7f3a55ded9e0] ref B L1: 98.1%  1.9%
    
[libx264 @ 0x7f3a55ded9e0] kb/s:1987.38
    
[aac @ 0x7f3a55deee80] Qavg: 1160.814

    and the resulting video is fine.

    Any ideas ?

    Cheers,

    Stu

    Edit

    It was suggested that I use a new function to do much the same thing. So I added the following function and used it for the command that I’m having trouble with :

    def ffmpegPro(args):
    
    err = None
    
    for i, arg in enumerate(args):
    
        if(" " in arg or "(" in arg or "[" in arg):
    
            args[i] = "\"" + arg + "\""
    
    command = [
    
        ffmpegcmd, '-y',
    
        '-loglevel', loglevel
    
    ] + args
    
    commandStr = " ".join(command)
    
    print("\n\n\n")
    
    print(command)
    
    print("\n\n\n")
    
    print(commandStr)
    
    ffmpeg = subprocess.Popen(commandStr, stderr=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=True, shell=True)
    
    while err == None:
    
        out, err = ffmpeg.communicate()
    
        time.sleep(1)
    
    if ffmpeg.returncode == 0 and all([os.path.exists(f) for f in (videoStorage['data_small'], videoStorage['data_big'])]):
    
        print("Job done.")
    
    else:
    
        print("ERROR")
    
        print(err)

    The resulting command can now be used in python or at the command line without needing to be changed at all. The command is :

    ffmpeg -y -loglevel verbose -i /var/www/temp/film.mp4 -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black" /var/www/temp/videoHD.mp4

    The result when executed in python is

    ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 58.100 / 55. 58.100
    
  libavcodec     57. 89.100 / 57. 89.100
    
  libavformat    57. 71.100 / 57. 71.100
    
  libavdevice    57.  6.100 / 57.  6.100
    
  libavfilter     6. 82.100 /  6. 82.100
    
  libavresample   3.  5.  0 /  3.  5.  0
    
  libswscale      4.  6.100 /  4.  6.100
    
  libswresample   2.  7.100 /  2.  7.100
    
  libpostproc    54.  5.100 / 54.  5.100
    
[h264 @ 0x7fb75053d560] Reinit context to 640x368, pix_fmt: yuv420p
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
    
    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[h264 @ 0x7fb75057f700] Reinit context to 640x368, pix_fmt: yuv420p
    
[graph_1_in_0_1 @ 0x7fb7506f45e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
    
[Parsed_scale_0 @ 0x7fb750711000] w:1920 h:1080 flags:'bicubic' interl:0
    
[graph 0 input from stream 0:0 @ 0x7fb7507126a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
    
[Parsed_scale_0 @ 0x7fb750711000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
    
[Parsed_pad_1 @ 0x7fb750711ac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
    
[libx264 @ 0x7fb7507139e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7fb7507139e0] profile High, level 4.0
    
[libx264 @ 0x7fb7507139e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/var/www/temp/videoHD.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.89.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.89.100 aac
    
Killed

    Note the Killed at the end. Is this significant and why is it only happening when executed in the script ?

    Here is the output from the command line which results in a successful video file.

    ffmpeg version 3.3.4-2~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version='2~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 58.100 / 55. 58.100
    
  libavcodec     57. 89.100 / 57. 89.100
    
  libavformat    57. 71.100 / 57. 71.100
    
  libavdevice    57.  6.100 / 57.  6.100
    
  libavfilter     6. 82.100 /  6. 82.100
    
  libavresample   3.  5.  0 /  3.  5.  0
    
  libswscale      4.  6.100 /  4.  6.100
    
  libswresample   2.  7.100 /  2.  7.100
    
  libpostproc    54.  5.100 / 54.  5.100
    
[h264 @ 0x7fb52cfb3560] Reinit context to 640x368, pix_fmt: yuv420p
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/temp/film.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
  Duration: 00:06:19.80, start: 0.000000, bitrate: 451 kb/s
    
    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 640x358 (640x368), 313 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[h264 @ 0x7fb52cff5700] Reinit context to 640x368, pix_fmt: yuv420p
    
[graph_1_in_0_1 @ 0x7fb52d16a5e0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
    
[Parsed_scale_0 @ 0x7fb52d187000] w:1920 h:1080 flags:'bicubic' interl:0
    
[graph 0 input from stream 0:0 @ 0x7fb52d1886a0] w:640 h:358 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:0/1 sws_param:flags=2
    
[Parsed_scale_0 @ 0x7fb52d187000] w:640 h:358 fmt:yuv420p sar:0/1 -> w:1920 h:1074 fmt:yuv420p sar:0/1 flags:0x4
    
[Parsed_pad_1 @ 0x7fb52d187ac0] w:1920 h:1074 -> w:1920 h:1080 x:0 y:2 color:0x000000FF
    
[libx264 @ 0x7fb52d1899e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7fb52d1899e0] profile High, level 4.0
    
[libx264 @ 0x7fb52d1899e0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/var/www/temp/videoHD.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.71.100
    
    Stream #0:0(und): Video: h264 (libx264), 1 reference frame ([33][0][0][0] / 0x0021), yuv420p(left), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.89.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.89.100 aac
    
frame=   47 fps=0.0 q=0.0 size=       0kB time=00:00:01.66 bitrate=   0.0kbits/s
    
frame=   59 fps= 41 q=29.0 size=     116kB time=00:00:02.04 bitrate= 464.8kbits/
    
frame=   71 fps= 35 q=29.0 size=     201kB time=00:00:02.45 bitrate= 671.3kbits/
    
frame=   80 fps= 31 q=29.0 size=     276kB time=00:00:02.75 bitrate= 822.0kbits/
    
    Blah
    
    Blah
    
    Blah
    
frame=11337 fps= 21 q=29.0 size=   97503kB time=00:06:17.98 bitrate=2113.2kbits/
    
frame=11351 fps= 21 q=26.0 size=   97572kB time=00:06:18.45 bitrate=2112.1kbits/
    
frame=11371 fps= 21 q=29.0 size=   97745kB time=00:06:19.11 bitrate=2112.1kbits/
    
frame=11390 fps= 21 q=29.0 size=   97852kB time=00:06:19.73 bitrate=2111.0kbits/
    
No more output streams to write to, finishing.
    
frame=11392 fps= 21 q=-1.0 Lsize=   98519kB time=00:06:19.77 bitrate=2125.1kbits/s speed=0.688x    
    
video:92124kB audio:5986kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.416313%
    
Input file #0 (/var/www/temp/film.mp4):
    
  Input stream #0:0 (video): 11392 packets read (14892948 bytes); 11392 frames decoded; 
    
  Input stream #0:1 (audio): 17803 packets read (6112540 bytes); 17802 frames decoded (18229248 samples); 
    
  Total: 29195 packets (21005488 bytes) demuxed
    
Output file #0 (/var/www/temp/videoHD.mp4):
    
  Output stream #0:0 (video): 11392 frames encoded; 11392 packets muxed (94334785 bytes); 
    
  Output stream #0:1 (audio): 17802 frames encoded (18229248 samples); 17803 packets muxed (6129981 bytes); 
    
  Total: 29195 packets (100464766 bytes) muxed
    
[libx264 @ 0x7fb52d1899e0] frame I:74    Avg QP:19.08  size: 51540
    
[libx264 @ 0x7fb52d1899e0] frame P:3506  Avg QP:21.34  size: 19348
    
[libx264 @ 0x7fb52d1899e0] frame B:7812  Avg QP:24.07  size:  2904
    
[libx264 @ 0x7fb52d1899e0] consecutive B-frames:  1.3% 20.2%  4.6% 73.9%
    
[libx264 @ 0x7fb52d1899e0] mb I  I16..4: 19.7% 73.6%  6.7%
    
[libx264 @ 0x7fb52d1899e0] mb P  I16..4:  3.2%  6.4%  0.1%  P16..4: 52.5%  7.6%  2.6%  0.0%  0.0%    skip:27.6%
    
[libx264 @ 0x7fb52d1899e0] mb B  I16..4:  0.2%  0.2%  0.0%  B16..8: 23.2%  0.4%  0.0%  direct: 0.5%  skip:75.5%  L0:51.8% L1:46.6% BI: 1.6%
    
[libx264 @ 0x7fb52d1899e0] 8x8 transform intra:66.4% inter:94.0%
    
[libx264 @ 0x7fb52d1899e0] coded y,uvDC,uvAC intra: 33.6% 53.4% 7.3% inter: 5.3% 14.2% 0.0%
    
[libx264 @ 0x7fb52d1899e0] i16 v,h,dc,p: 22% 27%  5% 46%
    
[libx264 @ 0x7fb52d1899e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 19% 20%  4%  7%  7%  7%  5%  4%
    
[libx264 @ 0x7fb52d1899e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 28% 11%  3%  9%  7%  6%  3%  2%
    
[libx264 @ 0x7fb52d1899e0] i8c dc,h,v,p: 49% 21% 20% 10%
    
[libx264 @ 0x7fb52d1899e0] Weighted P-Frames: Y:0.5% UV:0.1%
    
[libx264 @ 0x7fb52d1899e0] ref P L0: 63.4%  8.9% 21.4%  6.3%  0.0%
    
[libx264 @ 0x7fb52d1899e0] ref B L0: 89.3%  9.1%  1.6%
    
[libx264 @ 0x7fb52d1899e0] ref B L1: 98.1%  1.9%
    
[libx264 @ 0x7fb52d1899e0] kb/s:1987.38
    
[aac @ 0x7fb52d18ae80] Qavg: 1160.814

    Any more ideas why this is being handled differently in python as opposed to the command line ?

    I’m believe this is a version issue and that is why the below answer did not work for me, things were fine before I upgraded but since then a lot of things have been playing up. I upgraded both ffmpeg and python versions and don’t really want to go back if it can be avoided.

    Thanks,

    Stu

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