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  • FFMPEG Video to Audio Conversion Results in Different Durations

    10 juin 2020, par Eric J

    I am trying to covert an MP4 file into a mono WAV file sampled at 16,000 Hz.

    



    When I run below code, the duration goes from 00:09:59.99 (MP4) to 00:09:57.64 (WAV). Its original, longer version goes from 00:48:37.46 (MP4) to 00:48:23.38 (WAV).

    



    ffmpeg -i .mp4 -ac 1 -ar 16000 .wav


    



    I've also tried below code. The result is much worse, going from 00:09:59.99 (MP4) to 00:12:56.29 (AAC).

    



    ffmpeg -I .mp4 -vn -acodec copy .aac


    



    Attaching the log :

    



    Report written to "ffmpeg-20200610-093115.log"
Command line:
ffmpeg -i short.mp4 -ac 1 -ar 16000 short.wav -report
ffmpeg version 4.1.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
Splitting the commandline.
Reading option '-i' ... matched as input url with argument 'short.mp4'.
Reading option '-ac' ... matched as option 'ac' (set number of audio channels) with argument '1'.
Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '16000'.
Reading option 'short.wav' ... matched as output url.
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option report (generate a report) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url short.mp4.
Successfully parsed a group of options.
Opening an input file: short.mp4.
[NULL @ 0x7f98a3008200] Opening 'short.mp4' for reading
[file @ 0x7f98a2904440] Setting default whitelist 'file,crypto'
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] ISO: File Type Major Brand: mp42
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] Unknown dref type 0x206c7275 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] Processing st: 0, edit list 0 - media time: 0, duration: 7679872
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] Unknown dref type 0x206c7275 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] Processing st: 1, edit list 0 - media time: 1024, duration: 26459559
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] drop a frame at curr_cts: 0 @ 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] Before avformat_find_stream_info() pos: 11213917 bytes read:318782 seeks:1 nb_streams:2
[h264 @ 0x7f98a3808800] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x7f98a3808800] nal_unit_type: 8(PPS), nal_ref_idc: 3
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] demuxer injecting skip 1024 / discard 0
[aac @ 0x7f98a1008c00] skip 1024 / discard 0 samples due to side data
[h264 @ 0x7f98a3808800] nal_unit_type: 6(SEI), nal_ref_idc: 0
[h264 @ 0x7f98a3808800] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0x7f98a3808800] Format yuv420p chosen by get_format().
[h264 @ 0x7f98a3808800] Reinit context to 640x368, pix_fmt: yuv420p
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] All info found
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f98a3008200] After avformat_find_stream_info() pos: 21961 bytes read:351550 seeks:2 frames:46
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'short.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: isommp41mp42
    creation_time   : 2020-06-10T16:12:17.000000Z
  Duration: 00:09:59.99, start: 0.000000, bitrate: 149 kb/s
    Stream #0:0(eng), 1, 1/12800: Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 47 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2020-06-10T16:12:17.000000Z
      handler_name    : Core Media Video
    Stream #0:1(eng), 45, 1/44100: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 98 kb/s (default)
    Metadata:
      creation_time   : 2020-06-10T16:12:17.000000Z
      handler_name    : Core Media Audio
Successfully opened the file.
Parsing a group of options: output url short.wav.
Applying option ac (set number of audio channels) with argument 1.
Applying option ar (set audio sampling rate (in Hz)) with argument 16000.
Successfully parsed a group of options.
Opening an output file: short.wav.
[file @ 0x7f98a0c1db40] Setting default whitelist 'file,crypto'
Successfully opened the file.
Stream mapping:
  Stream #0:1 -> #0:0 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
[aac @ 0x7f98a100de00] skip 1024 / discard 0 samples due to side data
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
detected 12 logical cores
[graph_0_in_0_1 @ 0x7f98a0e2c4c0] Setting 'time_base' to value '1/44100'
[graph_0_in_0_1 @ 0x7f98a0e2c4c0] Setting 'sample_rate' to value '44100'
[graph_0_in_0_1 @ 0x7f98a0e2c4c0] Setting 'sample_fmt' to value 'fltp'
[graph_0_in_0_1 @ 0x7f98a0e2c4c0] Setting 'channel_layout' to value '0x4'
[graph_0_in_0_1 @ 0x7f98a0e2c4c0] tb:1/44100 samplefmt:fltp samplerate:44100 chlayout:0x4
[format_out_0_0 @ 0x7f98a0e2cb80] Setting 'sample_fmts' to value 's16'
[format_out_0_0 @ 0x7f98a0e2cb80] Setting 'sample_rates' to value '16000'
[format_out_0_0 @ 0x7f98a0e2cb80] Setting 'channel_layouts' to value '0x4'
[format_out_0_0 @ 0x7f98a0e2cb80] auto-inserting filter 'auto_resampler_0' between the filter 'Parsed_anull_0' and the filter 'format_out_0_0'
[AVFilterGraph @ 0x7f98a0c16ac0] query_formats: 4 queried, 6 merged, 3 already done, 0 delayed
[auto_resampler_0 @ 0x7f98a0e2d540] [SWR @ 0x7f98a28e1000] Using fltp internally between filters
[auto_resampler_0 @ 0x7f98a0e2d540] ch:1 chl:mono fmt:fltp r:44100Hz -> ch:1 chl:mono fmt:s16 r:16000Hz
Output #0, wav, to 'short.wav':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: isommp41mp42
    ISFT            : Lavf58.20.100
    Stream #0:0(eng), 0, 1/16000: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 16000 Hz, mono, s16, 256 kb/s (default)
    Metadata:
      creation_time   : 2020-06-10T16:12:17.000000Z
      handler_name    : Core Media Audio
      encoder         : Lavc58.35.100 pcm_s16le
size=   17152kB time=00:09:16.63 bitrate= 252.4kbits/s speed=1.11e+03x    
[out_0_0 @ 0x7f98a0e2c700] EOF on sink link out_0_0:default.
No more output streams to write to, finishing.
size=   18676kB time=00:09:59.99 bitrate= 255.0kbits/s speed=1.11e+03x    
video:0kB audio:18676kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000408%
Input file #0 (short.mp4):
  Input stream #0:0 (video): 1 packets read (3689 bytes); 
  Input stream #0:1 (audio): 25739 packets read (7375414 bytes); 25738 frames decoded (26355712 samples); 
  Total: 25740 packets (7379103 bytes) demuxed
Output file #0 (short.wav):
  Output stream #0:0 (audio): 25739 frames encoded (9562163 samples); 25739 packets muxed (19124326 bytes); 
  Total: 25739 packets (19124326 bytes) muxed
25738 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0x7f98a0c1dc40] Statistics: 4 seeks, 76 writeouts
[AVIOContext @ 0x7f98a29045c0] Statistics: 10902846 bytes read, 29 seeks


    


  • Not getting required audio codec in ffmpeg

    5 juin 2020, par user13546893

    I am using Colab to run the code.

    



    import os, sys, re

video_file_path = "/content/drive/My Drive/1111/Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate - Telly.mkv" #@param {type:"string"}
os.environ['fileName'] = filename_raw
os.environ['fileExtension'] = file_extension_raw

!ffmpeg -hide_banner -i "$inputFile" -c copy -strict -2 "$outputPath"/"$fileName".mp4


    



    But the problem is after conversion of mkv video in mp4 format my html5 player can't play the audio. Video is running fine.
Output :

    



    ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 7 (Ubuntu 7.3.0-16ubuntu3) configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1
--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-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57.
10.100 libavfilter 6.107.100 / 6.107.100 libavresample 3. 7. 0 / 3. 7. 0 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 Input #0, matroska,webm, from '/content/drive/Shared drives/Vedant/1111/Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate - Telly.mkv': Metadata: title : MoviePirate.in | Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate
- Telly.mkv encoder : libebml v1.3.10 + libmatroska v1.5.2 creation_time : 2020-05-01T15:55:34.000000Z Duration: 01:46:56.51, start: 0.000000, bitrate: 2975 kb/s Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv), 1920x960, SAR 1:1 DAR 2:1, 24 fps, 24 tbr, 1k tbn, 24 tbc (default) Metadata: title : MoviePirate.in BPS-eng : 2205883 DURATION-eng : 01:46:56.500000000 NUMBER_OF_FRAMES-eng: 153996 NUMBER_OF_BYTES-eng: 1769256160 _STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:1(hin): Audio: eac3, 48000 Hz, 5.1(side), fltp, 768 kb/s Metadata: title : MoviePirate.in BPS-eng : 768000 DURATION-eng : 01:46:56.512000000 NUMBER_OF_FRAMES-eng: 200516 NUMBER_OF_BYTES-eng: 615985152 _STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:2(eng): Subtitle: subrip Metadata: title : MoviePirate.in BPS-eng : 42 DURATION-eng : 01:41:50.375000000 NUMBER_OF_FRAMES-eng: 1123 NUMBER_OF_BYTES-eng: 32413
_STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES File '/content/drive/Shared drives/Vedant/1111//Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate
- Telly.mp4' already exists. Overwrite ? [y/N] y [mp4 @ 0x560897578c00] track 1: codec frame size is not set Output #0, mp4, to '/content/drive/Shared drives/Vedant/1111//Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate
- Telly.mp4': Metadata: title : MoviePirate.in | Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate - Telly.mkv encoder : Lavf57.83.100 Stream #0:0: Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv), 1920x960 [SAR 1:1 DAR 2:1], q=2-31, 24 fps, 24 tbr, 16k tbn, 1k tbc (default) Metadata: title : MoviePirate.in BPS-eng : 2205883 DURATION-eng : 01:46:56.500000000 NUMBER_OF_FRAMES-eng: 153996 NUMBER_OF_BYTES-eng: 1769256160 _STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:1(hin): Audio: eac3 (ec-3 / 0x332D6365), 48000 Hz,
5.1(side), fltp, 768 kb/s Metadata: title : MoviePirate.in BPS-eng : 768000 DURATION-eng : 01:46:56.512000000 NUMBER_OF_FRAMES-eng: 200516 NUMBER_OF_BYTES-eng: 615985152 _STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1
-> #0:1 (copy) Press [q] to stop, [?] for help frame=153996 fps=10450 q=-1.0 Lsize= 2334010kB time=01:46:56.48 bitrate=2979.9kbits/s speed= 435x video:1727789kB audio:601548kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 0.200594%    ffmpeg version
3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 7 (Ubuntu 7.3.0-16ubuntu3) configuration: --prefix=/usr
--extra-version=0ubuntu0.18.04.1 --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-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57.
10.100 libavfilter 6.107.100 / 6.107.100 libavresample 3. 7. 0 / 3. 7. 0 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 Input #0, matroska,webm, from '/content/drive/Shared drives/Vedant/1111/Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate - Telly.mkv': Metadata: title : MoviePirate.in | Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate
- Telly.mkv encoder : libebml v1.3.10 + libmatroska v1.5.2 creation_time : 2020-05-01T15:55:34.000000Z Duration: 01:46:56.51, start: 0.000000, bitrate: 2975 kb/s Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv), 1920x960, SAR 1:1 DAR 2:1, 24 fps, 24 tbr, 1k tbn, 24 tbc (default) Metadata: title : MoviePirate.in BPS-eng : 2205883 DURATION-eng : 01:46:56.500000000 NUMBER_OF_FRAMES-eng: 153996 NUMBER_OF_BYTES-eng: 1769256160 _STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:1(hin): Audio: eac3, 48000 Hz, 5.1(side), fltp, 768 kb/s Metadata: title : MoviePirate.in BPS-eng : 768000 DURATION-eng : 01:46:56.512000000 NUMBER_OF_FRAMES-eng: 200516 NUMBER_OF_BYTES-eng: 615985152 _STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:2(eng): Subtitle: subrip Metadata: title : MoviePirate.in BPS-eng : 42 DURATION-eng : 01:41:50.375000000 NUMBER_OF_FRAMES-eng: 1123 NUMBER_OF_BYTES-eng: 32413
_STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES File '/content/drive/Shared drives/Vedant/1111//Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate
- Telly.mp4' already exists. Overwrite ? [y/N] y [mp4 @ 0x560897578c00] track 1: codec frame size is not set Output #0, mp4, to '/content/drive/Shared drives/Vedant/1111//Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate
- Telly.mp4': Metadata: title : MoviePirate.in | Mrs.Serial Killer 2020 1080p 10bit NF WEBRip Hindi DD+5.1 Atmos x265 HEVC ESub - MoviePirate - Telly.mkv encoder : Lavf57.83.100 Stream #0:0: Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv), 1920x960 [SAR 1:1 DAR 2:1], q=2-31, 24 fps, 24 tbr, 16k tbn, 1k tbc (default) Metadata: title : MoviePirate.in BPS-eng : 2205883 DURATION-eng : 01:46:56.500000000 NUMBER_OF_FRAMES-eng: 153996 NUMBER_OF_BYTES-eng: 1769256160 _STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:1(hin): Audio: eac3 (ec-3 / 0x332D6365), 48000 Hz,
5.1(side), fltp, 768 kb/s Metadata: title : MoviePirate.in BPS-eng : 768000 DURATION-eng : 01:46:56.512000000 NUMBER_OF_FRAMES-eng: 200516 NUMBER_OF_BYTES-eng: 615985152 _STATISTICS_WRITING_APP-eng: mkvmerge v44.0.0 ('Domino') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-01 15:55:34 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1
-> #0:1 (copy) Press [q] to stop, [?] for help frame=153996 fps=10450 q=-1.0 Lsize= 2334010kB time=01:46:56.48 bitrate=2979.9kbits/s speed= 435x video:1727789kB audio:601548kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 0.200594%


    



    What changes should I do in the Code ?

    


  • How to export audio from a iPhone video file with FFmpeg ?

    11 janvier 2020, par DanScripter

    UPDATE 1 the problem resides in the input read-stream. (check below)

    I am using fluent-ffmpeg (version : 2.1.2) to get a .mp3 file out of a video file that I input as a stream .createReadStream(). I output the file as a .pipe to a remoteWriteStream.

    ffmpeg -i pipe:0 -vn -f mp3 -acodec mp3 -movflags frag_keyframe+empty_moov pipe:1

    This works fine with .mp4, .webm and .mov (codec : prores) files.

    But it somehow does not want to work with a .mov out of an iPhone 11. FFmpeg is not giving me any error when running above code. It creates the .mp3 file but the size is just 152 B and it is not playable.

    I ffprobed the iPhone .mov files it returns this :

    "{ streams: 
    
   [ { index: 0,
    
       codec_name: 'hevc',
    
       codec_long_name: 'H.265 / HEVC (High Efficiency Video Coding)',
    
       profile: 'Main',
    
       codec_type: 'video',
    
       codec_time_base: '1111/33300',
    
       codec_tag_string: 'hvc1',
    
       codec_tag: '0x31637668',
    
       width: 1920,
    
       height: 1080,
    
       coded_width: 1920,
    
       coded_height: 1088,
    
       has_b_frames: 2,
    
       sample_aspect_ratio: '0:1',
    
       display_aspect_ratio: '0:1',
    
       pix_fmt: 'yuv420p',
    
       level: 120,
    
       color_range: 'tv',
    
       color_space: 'bt709',
    
       color_transfer: 'bt709',
    
       color_primaries: 'bt709',
    
       chroma_location: 'unspecified',
    
       field_order: 'unknown',
    
       timecode: 'N/A',
    
       refs: 1,
    
       id: 'N/A',
    
       r_frame_rate: '30000/1001',
    
       avg_frame_rate: '33300/1111',
    
       time_base: '1/600',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 6666,
    
       duration: 11.11,
    
       bit_rate: 7611708,
    
       max_bit_rate: 'N/A',
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 333,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] },
    
     { index: 1,
    
       codec_name: 'aac',
    
       codec_long_name: 'AAC (Advanced Audio Coding)',
    
       profile: 'unknown',
    
       codec_type: 'audio',
    
       codec_time_base: '1/44100',
    
       codec_tag_string: 'mp4a',
    
       codec_tag: '0x6134706d',
    
       sample_fmt: 'fltp',
    
       sample_rate: 44100,
    
       channels: 2,
    
       channel_layout: 'stereo',
    
       bits_per_sample: 0,
    
       id: 'N/A',
    
       r_frame_rate: '0/0',
    
       avg_frame_rate: '0/0',
    
       time_base: '1/44100',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 489951,
    
       duration: 11.11,
    
       bit_rate: 135091,
    
       max_bit_rate: 192000,
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 481,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] },
    
     { index: 2,
    
       codec_name: 'unknown',
    
       codec_long_name: 'unknown',
    
       profile: 'unknown',
    
       codec_type: 'data',
    
       codec_tag_string: 'mebx',
    
       codec_tag: '0x7862656d',
    
       id: 'N/A',
    
       r_frame_rate: '0/0',
    
       avg_frame_rate: '0/0',
    
       time_base: '1/600',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 6666,
    
       duration: 11.11,
    
       bit_rate: 2670,
    
       max_bit_rate: 'N/A',
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 38,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] },
    
     { index: 3,
    
       codec_name: 'unknown',
    
       codec_long_name: 'unknown',
    
       profile: 'unknown',
    
       codec_type: 'data',
    
       codec_tag_string: 'mebx',
    
       codec_tag: '0x7862656d',
    
       id: 'N/A',
    
       r_frame_rate: '0/0',
    
       avg_frame_rate: '0/0',
    
       time_base: '1/600',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 6666,
    
       duration: 11.11,
    
       bit_rate: 7,
    
       max_bit_rate: 'N/A',
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 1,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] },
    
     { index: 4,
    
       codec_name: 'unknown',
    
       codec_long_name: 'unknown',
    
       profile: 'unknown',
    
       codec_type: 'data',
    
       codec_tag_string: 'mebx',
    
       codec_tag: '0x7862656d',
    
       id: 'N/A',
    
       r_frame_rate: '0/0',
    
       avg_frame_rate: '0/0',
    
       time_base: '1/600',
    
       start_pts: 'N/A',
    
       start_time: 'N/A',
    
       duration_ts: 6666,
    
       duration: 11.11,
    
       bit_rate: 18117,
    
       max_bit_rate: 'N/A',
    
       bits_per_raw_sample: 'N/A',
    
       nb_frames: 333,
    
       nb_read_frames: 'N/A',
    
       nb_read_packets: 'N/A',
    
       tags: [Object],
    
       disposition: [Object] } ],
    
  format: 
    
   { filename: 'pipe:0',
    
     nb_streams: 5,
    
     nb_programs: 0,
    
     format_name: 'mov,mp4,m4a,3gp,3g2,mj2',
    
     format_long_name: 'QuickTime / MOV',
    
     start_time: 'N/A',
    
     duration: 11.11,
    
     size: 'N/A',
    
     bit_rate: 'N/A',
    
     probe_score: 100,
    
     tags: 
    
      { major_brand: 'qt  ',
    
        minor_version: '0',
    
        compatible_brands: 'qt  ',
    
        creation_time: '2020-01-11T12:33:36.000000Z',
    
        'com.apple.quicktime.make': 'Apple',
    
        'com.apple.quicktime.model': 'iPhone 11',
    
        'com.apple.quicktime.software': '13.3',
    
        'com.apple.quicktime.creationdate': '2020-01-11T13:33:36+0100' } },
    
  chapters: [] }"

    The created .mp3 file results in a undefined.

    I already tried to take the .mov re-encode it to an .mp4 via ffmpeg and then try the above code to get the .mp3 - still does not work.

    Any advice how I can make this work ?

    thanks !

    UPDATE 1
    The problem resides in the input stream ! When I download the file to the local machine and input it as as a local file, not as a read stream, it works perfectly.

    I am creating the stream from a google cloud bucket like this :

    const myBucket = storage.bucket('myBucket');
    
const remoteReadStream = myBucket.file(file).createReadStream();

    Since this code is perfectly working with all other codecs, what maybe the issue while creating the read stream from the google cloud from a h265 file ?

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