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  • 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

  • Evolution #2250 : Un bouton pour envoyer les identifiants

    9 novembre 2017, par RastaPopoulos ♥

    Une ressource (je stocke ça là) :
    https://www.smashingmagazine.com/2017/11/safe-password-resets-with-json-web-tokens/

  • An FFMpeg function on azure is not handling simultaneous calls (more than 5)

    9 novembre 2017, par The Lemon

    I created a c# httptrigger function on azure which uses FFMpeg to add subtitles to a video, and then just output the video locally (nothing fancy, all the files are in the local resources for the function, and the output is there as well). The process runs perfectly fine when I test it, I made a C# app to call the function and when I test the app it works fine as well. The only problem is when I tell the app to call the function several times at once it will only work for three or four simultaneous calls, any more than that will cause all of the calls to fail.
    Below is included the function code, the C# app code, and the partial output for successful calls and for failed calls. Any help or advice would be greatly appreciated as always. Regards Cuan

    note - the ffmpeg output from the azure function is largely omitted, as it produces output every few frames. I’ve included the start and the end of the output

    This is the C# method which is being run multiple times at once.

        public static async void callHTTP(string url, int num)
    
    {
    
        using (var client = new HttpClient())
    
        {
    
            client.Timeout = TimeSpan.FromMinutes(10);
    
            var content = new StringContent(JsonConvert.SerializeObject(" {\"name\": \"Azure\"}"), Encoding.UTF8, "application/json");
    
            System.TimeSpan tmp = DateTime.Now - time1;
    
            Console.WriteLine("Process {0} has started after time {1}", num + 1, tmp.ToString());
    
            var response = await client.PostAsync(url, content);
    
            tmp = DateTime.Now - time1;
    
            Console.WriteLine("Process {0} has finished after time {1}", num + 1, tmp.ToString());
    
            if (response.IsSuccessStatusCode)
    
            {
    
                Console.WriteLine("this is a reply");
    
                finished += 1;
    
                tmp = DateTime.Now - time1;
    
                Console.WriteLine("Runningtime for process {0} was {1}", num + 1, tmp.ToString());
    
            }
    

    
        }
    
    }

    This is the function being called

    using System.Net;
    
using System;
    
using System.Diagnostics;
    
using System.ComponentModel;
    

    

    
public static async Task<httpresponsemessage> Run(HttpRequestMessage req, TraceWriter log)
    
{
    

    
log.Info("C# HTTP trigger function processed a request.");
    
//Basic Parameters
    
    string ffmpegFile = @"D:\home\site\wwwroot\CommonResources\ffmpeg.exe";
    
    string outputpath = @"D:\home\site\wwwroot\ffmpeg_generic_webhook\output\";
    
    string reloutputpath = "output/";
    
    string relinputpath = "input/";
    
    string outputfile = "video2.mp4";
    
    string dir =  @"D:\home\site\wwwroot\ffmpeg_generic_webhook\";
    

    
//Special Parameters
    
    string videoFile = "1 minute basic.mp4";
    
    string sub = "1 minute sub.ass";
    
//guid tmp files
    
    string f1 = videoFile;
    
    string f2 = sub;
    
//guid output
    
    Guid g3 = Guid.NewGuid();
    
    string outputGuid = g3+".mp4";
    

    
//argument
    
    string tmp = subArg(f1, f2, outputGuid );
    
//String.Format("-i \"" + @"input/tmp.mp4" + "\" -vf \"ass = '" + sub + "'\" \"" + reloutputpath +outputfile + "\" ");
    
log.Info("ffmpeg argument is: "+tmp);
    

    

    
//startprocess parameters
    
Process process = new Process();
    
process.StartInfo.FileName = ffmpegFile;
    
process.StartInfo.Arguments =  tmp;
    
process.StartInfo.UseShellExecute = false;
    
process.StartInfo.RedirectStandardOutput = true;
    
process.StartInfo.RedirectStandardError = true;
    
process.StartInfo.WorkingDirectory = dir;
    
//output handler
    

    
process.OutputDataReceived += new DataReceivedEventHandler(
    
    (s, e) => 
    
    { 
    
        log.Info("O: "+e.Data);
    
    }
    
);
    
process.ErrorDataReceived += new DataReceivedEventHandler(
    
    (s, e) => 
    
    { 
    
        log.Info("E: "+e.Data);
    
    }
    
);
    
//start process
    
process.Start();
    
log.Info("process started");
    
process.BeginOutputReadLine();
    
process.BeginErrorReadLine();
    
process.WaitForExit();
    
log.Info("process has finished, deleting any tmp files and replying");
    
return req.CreateResponse(HttpStatusCode.OK, outputGuid);
    
}
    
</httpresponsemessage>

    The output for the failed set of calls (they all run together, so the output is a bit jumbled)

    2017-11-08T05:49:48.821 Function started (Id=1b2cc785-086d-495a-a994-3ee9b86bb926)
    
2017-11-08T05:49:48.834 Function started (Id=f0b9b383-b86b-4006-9e13-59861e2c0c35)
    
2017-11-08T05:49:48.834 Function started (Id=80c2a433-728e-42d3-804d-87461e369bd8)
    
2017-11-08T05:49:49.287 C# HTTP trigger function processed a request.
    
2017-11-08T05:49:49.287 ffmpeg argument is: -i "input/1 minute basic.mp4" -vf "ass = 'input/1 minute sub.ass'" "output/8ab2a4fd-39df-4da9-b0c5-5b33e95d6403.mp4"
    
2017-11-08T05:49:49.305 C# HTTP trigger function processed a request.
    
2017-11-08T05:49:49.305 ffmpeg argument is: -i "input/1 minute basic.mp4" -vf "ass = 'input/1 minute sub.ass'" "output/5805f054-db13-4154-8fe8-545161d2eb83.mp4"
    
2017-11-08T05:49:49.305 C# HTTP trigger function processed a request.
    
2017-11-08T05:49:49.305 ffmpeg argument is: -i "input/1 minute basic.mp4" -vf "ass = 'input/1 minute sub.ass'" "output/4275f98d-7a31-484c-960b-1e133056e895.mp4"
    
2017-11-08T05:49:49.381 process started
    
2017-11-08T05:49:49.428 process started
    
2017-11-08T05:49:49.491 E: ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
    
2017-11-08T05:49:49.491 E:   built with gcc 7.1.0 (GCC)
    
2017-11-08T05:49:49.491 E:   configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
    
2017-11-08T05:49:49.491 E:   libavutil      55. 58.100 / 55. 58.100
    
2017-11-08T05:49:49.491 E:   libavcodec     57. 89.100 / 57. 89.100
    
2017-11-08T05:49:49.491 E:   libavformat    57. 71.100 / 57. 71.100
    
2017-11-08T05:49:49.491 E:   libavdevice    57.  6.100 / 57.  6.100
    
2017-11-08T05:49:49.491 E:   libavfilter     6. 82.100 /  6. 82.100
    
2017-11-08T05:49:49.491 E:   libswscale      4.  6.100 /  4.  6.100
    
2017-11-08T05:49:49.491 E:   libswresample   2.  7.100 /  2.  7.100
    
2017-11-08T05:49:49.491 E:   libpostproc    54.  5.100 / 54.  5.100
    
2017-11-08T05:49:49.522 process started
    
2017-11-08T05:49:49.570 E: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input/1 minute basic.mp4':
    
2017-11-08T05:49:49.570 E:   Metadata:
    
2017-11-08T05:49:49.570 E:     major_brand     : mp42
    
2017-11-08T05:49:49.570 E:     minor_version   : 0
    
2017-11-08T05:49:49.570 E:     compatible_brands: mp41isom
    
2017-11-08T05:49:49.570 E:     creation_time   : 2017-11-03T23:42:35.000000Z
    
2017-11-08T05:49:49.570 E:   Duration: 00:01:00.03, start: 0.000000, bitrate: 824 kb/s
    
2017-11-08T05:49:49.570 E:     Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 823 kb/s, 30.30 fps, 30.30 tbr, 30k tbn, 60 tbc (default)
    
2017-11-08T05:49:49.570 E:     Metadata:
    
2017-11-08T05:49:49.570 E:       creation_time   : 2017-11-03T23:42:35.000000Z
    
2017-11-08T05:49:49.570 E:       handler_name    : VideoHandler
    
2017-11-08T05:49:49.570 E:       encoder         : AVC Coding
    
2017-11-08T05:49:49.584 E: Stream mapping:
    
2017-11-08T05:49:49.584 E:   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
2017-11-08T05:49:49.584 E: Press [q] to stop, [?] for help
    
2017-11-08T05:49:49.615 E: [Parsed_ass_0 @ 000000000117ee60] Shaper: FriBidi 0.19.6 (SIMPLE)
    
2017-11-08T05:49:49.631 process started
    
2017-11-08T05:49:49.929 process started
    
2017-11-08T05:49:50.069 process started
    
2017-11-08T05:49:50.115 process started
    
2017-11-08T05:49:54.990 E: [Parsed_ass_0 @ 000000000117ee60] Using font provider directwrite
    
2017-11-08T05:49:54.990 E: [Parsed_ass_0 @ 000000000117ee60] Added subtitle file: 'input/1 minute sub.ass' (5 styles, 6 events)
    
2017-11-08T05:49:55.006 E: [Parsed_ass_0 @ 000000000117ee60] fontselect: (Arial, 700, 0) -> Arial-BoldMT, 0, Arial-BoldMT
    
2017-11-08T05:49:55.006 E: [libx264 @ 00000000004dd860] using SAR=1/1
    
2017-11-08T05:49:55.006 E: [libx264 @ 00000000004dd860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
2017-11-08T05:49:55.022 E: [libx264 @ 00000000004dd860] profile High, level 3.2
    
2017-11-08T05:49:55.022 E: [libx264 @ 00000000004dd860] 264 - core 152 r2851 ba24899 - 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=1 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
    
2017-11-08T05:49:55.022 E: Output #0, mp4, to 'output/8ab2a4fd-39df-4da9-b0c5-5b33e95d6403.mp4':
    
2017-11-08T05:49:55.022 E:   Metadata:
    
2017-11-08T05:49:55.022 E:     major_brand     : mp42
    
2017-11-08T05:49:55.022 E:     minor_version   : 0
    
2017-11-08T05:49:55.022 E:     compatible_brands: mp41isom
    
2017-11-08T05:49:55.022 E:     encoder         : Lavf57.71.100
    
2017-11-08T05:49:55.022 E:     Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30.30 fps, 16k tbn, 30.30 tbc (default)
    
2017-11-08T05:49:55.022 E:     Metadata:
    
2017-11-08T05:49:55.022 E:       creation_time   : 2017-11-03T23:42:35.000000Z
    
2017-11-08T05:49:55.022 E:       handler_name    : VideoHandler
    
2017-11-08T05:49:55.022 E:       encoder         : Lavc57.89.100 libx264
    
2017-11-08T05:49:55.022 E:     Side data:
    
2017-11-08T05:49:55.022 E:       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
2017-11-08T05:49:56.787 E: frame=    2 fps=0.4 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
    
2017-11-08T05:49:56.851 E: frame=    4 fps=0.6 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x

    lots of code omitted here, only showing one of the many calls failing due to character limit.

    2017-11-08T05:50:27.695 E: x264 [error]: malloc of size 3233984 failed
    
2017-11-08T05:50:27.695 E: Video encoding failed
    
2017-11-08T05:50:27.932 E: frame=  112 fps=3.0 q=29.0 size=      92kB time=00:00:02.24 bitrate= 335.9kbits/s speed=0.0598x
    
2017-11-08T05:50:28.132 E: Conversion failed!
    
2017-11-08T05:50:28.274 E: frame=  164 fps=4.3 q=29.0 size=      97kB time=00:00:03.96 bitrate= 201.0kbits/s speed=0.104x
    
2017-11-08T05:50:28.304 E: Conversion failed!
    
2017-11-08T05:50:28.304 E: Conversion failed!
    
2017-11-08T05:50:28.336 E: frame=  253 fps=6.6 q=29.0 size=     159kB time=00:00:06.89 bitrate= 189.0kbits/s speed=0.179x
    
2017-11-08T05:50:30.163 E: frame=   27 fps=0.7 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
    
2017-11-08T05:50:30.227 E: frame=   28 fps=0.7 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
    
2017-11-08T05:50:30.276 E:
    
2017-11-08T05:50:30.305 O:
    
2017-11-08T05:50:30.727 E: frame=   40 fps=1.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
    
2017-11-08T05:50:30.867 E: frame=  129 fps=3.2 q=29.0 size=      93kB time=00:00:02.80 bitrate= 272.3kbits/s speed=0.0693x
    
2017-11-08T05:50:30.929 E:
    
2017-11-08T05:50:30.929 O:
    
2017-11-08T05:50:30.929 E:
    
2017-11-08T05:50:30.948 O:
    
2017-11-08T05:50:31.290 E: frame=  178 fps=4.3 q=29.0 size=     116kB time=00:00:04.42 bitrate= 214.8kbits/s speed=0.108x
    
2017-11-08T05:50:31.822 E: frame=  133 fps=3.2 q=29.0 size=      94kB time=00:00:02.93 bitrate= 261.0kbits/s speed=0.0715x

    working example (only one call)

    2017-11-08T07:07:08.633 Function started (Id=5416410c-a185-44bd-8c9c-fc24efb80780)
    
2017-11-08T07:07:09.180 C# HTTP trigger function processed a request.
    
2017-11-08T07:07:09.180 ffmpeg argument is: -i "input/1 minute basic.mp4" -vf "ass = 'input/1 minute sub.ass'" "output/9a7af992-7202-45c6-a275-f71a184fc89b.mp4"
    
2017-11-08T07:07:09.508 process started
    
2017-11-08T07:07:10.992 E: ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
    
2017-11-08T07:07:10.992 E:   built with gcc 7.1.0 (GCC)
    
2017-11-08T07:07:10.992 E:   configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
    
2017-11-08T07:07:11.367 E:   libavutil      55. 58.100 / 55. 58.100
    
2017-11-08T07:07:11.367 E:   libavcodec     57. 89.100 / 57. 89.100
    
2017-11-08T07:07:11.367 E:   libavformat    57. 71.100 / 57. 71.100
    
2017-11-08T07:07:11.367 E:   libavdevice    57.  6.100 / 57.  6.100
    
2017-11-08T07:07:11.367 E:   libavfilter     6. 82.100 /  6. 82.100
    
2017-11-08T07:07:11.367 E:   libswscale      4.  6.100 /  4.  6.100
    
2017-11-08T07:07:11.367 E:   libswresample   2.  7.100 /  2.  7.100
    
2017-11-08T07:07:11.367 E:   libpostproc    54.  5.100 / 54.  5.100
    
2017-11-08T07:07:12.977 E: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input/1 minute basic.mp4':
    
2017-11-08T07:07:12.977 E:   Metadata:
    
2017-11-08T07:07:12.977 E:     major_brand     : mp42
    
2017-11-08T07:07:12.977 E:     minor_version   : 0
    
2017-11-08T07:07:12.977 E:     compatible_brands: mp41isom
    
2017-11-08T07:07:12.977 E:     creation_time   : 2017-11-03T23:42:35.000000Z
    
2017-11-08T07:07:12.977 E:   Duration: 00:01:00.03, start: 0.000000, bitrate: 824 kb/s
    
2017-11-08T07:07:12.977 E:     Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 823 kb/s, 30.30 fps, 30.30 tbr, 30k tbn, 60 tbc (default)
    
2017-11-08T07:07:12.977 E:     Metadata:
    
2017-11-08T07:07:12.977 E:       creation_time   : 2017-11-03T23:42:35.000000Z
    
2017-11-08T07:07:12.977 E:       handler_name    : VideoHandler
    
2017-11-08T07:07:12.977 E:       encoder         : AVC Coding
    
2017-11-08T07:07:12.992 E: Stream mapping:
    
2017-11-08T07:07:13.008 E:   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
2017-11-08T07:07:13.008 E: Press [q] to stop, [?] for help
    
2017-11-08T07:07:13.320 E: [Parsed_ass_0 @ 000000000107ee60] Shaper: FriBidi 0.19.6 (SIMPLE)
    
2017-11-08T07:07:14.987 E: [Parsed_ass_0 @ 000000000107ee60] Using font provider directwrite
    
2017-11-08T07:07:15.143 E: [Parsed_ass_0 @ 000000000107ee60] Added subtitle file: 'input/1 minute sub.ass' (5 styles, 6 events)
    
2017-11-08T07:07:15.455 E: [Parsed_ass_0 @ 000000000107ee60] fontselect: (Arial, 700, 0) -> Arial-BoldMT, 0, Arial-BoldMT
    
2017-11-08T07:07:15.833 E: [libx264 @ 00000000004fd860] using SAR=1/1
    
2017-11-08T07:07:15.911 E: [libx264 @ 00000000004fd860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
2017-11-08T07:07:15.973 E: [libx264 @ 00000000004fd860] profile High, level 3.2
    
2017-11-08T07:07:15.973 E: [libx264 @ 00000000004fd860] 264 - core 152 r2851 ba24899 - 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=1 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
    
2017-11-08T07:07:15.973 E: Output #0, mp4, to 'output/9a7af992-7202-45c6-a275-f71a184fc89b.mp4':
    
2017-11-08T07:07:15.973 E:   Metadata:
    
2017-11-08T07:07:15.973 E:     major_brand     : mp42
    
2017-11-08T07:07:15.973 E:     minor_version   : 0
    
2017-11-08T07:07:15.973 E:     compatible_brands: mp41isom
    
2017-11-08T07:07:15.973 E:     encoder         : Lavf57.71.100
    
2017-11-08T07:07:15.973 E:     Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30.30 fps, 16k tbn, 30.30 tbc (default)
    
2017-11-08T07:07:15.973 E:     Metadata:
    
2017-11-08T07:07:15.973 E:       creation_time   : 2017-11-03T23:42:35.000000Z
    
2017-11-08T07:07:15.973 E:       handler_name    : VideoHandler
    
2017-11-08T07:07:15.973 E:       encoder         : Lavc57.89.100 libx264
    
2017-11-08T07:07:15.973 E:     Side data:
    
2017-11-08T07:07:15.973 E:       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
2017-11-08T07:07:16.137 E: frame=    2 fps=0.7 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
    
2017-11-08T07:07:16.528 E: frame=   21 fps=6.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
    
2017-11-08T07:07:17.622 E: frame=   43 fps=9.5 q=29.0 size=      34kB time=-00:00:00.03 bitrate=N/A speed=N/A
    
2017-11-08T07:07:18.122 E: frame=   46 fps=9.1 q=29.0 size=      35kB time=00:00:00.06 bitrate=4372.6kbits/s speed=0.013x

     omitted 

    2017-11-08T07:07:30.809 E: [Parsed_ass_0 @ 000000000107ee60] fontselect: (Arial, 400, 0) -> ArialMT, 0, ArialMT
    

    
2017-11-08T07:08:43.186 E: frame= 1819 fps= 20 q=29.0 Lsize=     992kB time=00:00:59.92 bitrate= 135.6kbits/s speed=0.665x
    
2017-11-08T07:08:43.186 E: video:971kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.171792%
    
2017-11-08T07:08:43.217 E: [libx264 @ 00000000004fd860] frame I:8     Avg QP:12.19  size: 44849
    
2017-11-08T07:08:43.217 E: [libx264 @ 00000000004fd860] frame P:532   Avg QP:16.00  size:   923
    
2017-11-08T07:08:43.217 E: [libx264 @ 00000000004fd860] frame B:1279  Avg QP:20.61  size:   112
    
2017-11-08T07:08:43.217 E: [libx264 @ 00000000004fd860] consecutive B-frames:  4.7%  0.8% 11.4% 83.1%
    
2017-11-08T07:08:43.217 E: [libx264 @ 00000000004fd860] mb I  I16..4: 49.2% 24.2% 26.7%
    
2017-11-08T07:08:43.217 E: [libx264 @ 00000000004fd860] mb P  I16..4:  0.2%  0.3%  0.1%  P16..4:  2.6%  0.3%  0.4%  0.0%  0.0%    skip:96.2%
    
2017-11-08T07:08:43.217 E: [libx264 @ 00000000004fd860] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8:  2.1%  0.0%  0.0%  direct: 0.0%  skip:97.7%  L0:40.0% L1:59.7% BI: 0.3%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] 8x8 transform intra:39.3% inter:39.5%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] coded y,uvDC,uvAC intra: 16.3% 15.7% 8.8% inter: 0.5% 0.0% 0.0%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] i16 v,h,dc,p: 56% 31%  4%  9%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24%  9% 65%  1%  0%  0%  0%  0%  0%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 21% 15%  6%  6%  6%  4%  6%  4%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] i8c dc,h,v,p: 71% 16% 11%  1%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] Weighted P-Frames: Y:0.0% UV:0.0%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] ref P L0: 71.3% 12.7% 14.6%  1.4%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] ref B L0: 69.3% 29.3%  1.4%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] ref B L1: 97.0%  3.0%
    
2017-11-08T07:08:43.233 E: [libx264 @ 00000000004fd860] kb/s:132.38
    
2017-11-08T07:08:43.295 O:
    
2017-11-08T07:08:43.295 E:
    
2017-11-08T07:08:43.342 Function completed (Success, Id=5416410c-a185-44bd-8c9c-fc24efb80780, Duration=94698ms)

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