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  • How to fix : Frame rate differs from source after encoding certain mp4 videos to wmv

    25 juin 2019, par hpenhp

    I’m having trouble with a usually working ffmpeg script for encoding mp4 and more to wmv. The goal is to keep it like the original, except for the resolution (smaller) and the format (wmv).

    When it usually works for a lot of videos, on some of them it doesn’t... and i would like to understand and avoid that.

    I tried several things, forcing the framerate for the output, using -vsync 2 option, -vsync 0 also.. noone of that fixed the issue.

    An other thing, worth adding, is that the fps value from media info is good (24 fps) on the output like the input, but through the M$ windows explorer, it says 30 frames per sec, and when you play the video you see that the text that was matching the input doesn’t match the output any more (because of the fps mismatching).

    Below the script i use :

    ffmpeg -threads auto -i input.mp4 -s 480*320 -b:v 1000k -vcodec msmpeg4 -acodec wmav2 -f asf output.wmv

    Here is the ffmpeg log :

    ffmpeg version 3.4.1-1~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.5) 20160609
    
  configuration: --prefix=/usr --extra-version='1~16.04.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-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
    
  WARNING: library configuration mismatch
    
  avcodec     configuration: --prefix=/usr --extra-version='1~16.04.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-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 --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
    
  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, mov,mp4,m4a,3gp,3g2,mj2, from './test_2k-24__hq_960x540.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42mp41isomavc1
    
    creation_time   : 2019-05-27T14:37:50.000000Z
    
  Duration: 01:28:52.80, start: 0.000000, bitrate: 1232 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 960x540, 1091 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-05-27T14:37:50.000000Z
    
      handler_name    : L-SMASH Video Handler
    
      encoder         : AVC Coding
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 137 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-05-27T14:37:50.000000Z
    
      handler_name    : L-SMASH Audio Handler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> msmpeg4v3 (msmpeg4))
    
  Stream #0:1 -> #0:1 (aac (native) -> wmav2 (native))
    
Press [q] to stop, [?] for help
    
Output #0, asf, to '/nas/copiedetravail/test_2k-24__hq_960x540.mp4.wmv':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42mp41isomavc1
    
    WM/EncodingSettings: Lavf57.83.100
    
    Stream #0:0(und): Video: msmpeg4v3 (msmpeg4) (MP43 / 0x3334504D), yuv420p(progressive), 480x320, q=2-31, 1000 kb/s, 24 fps, 1k tbn, 24 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-05-27T14:37:50.000000Z
    
      handler_name    : L-SMASH Video Handler
    
      encoder         : Lavc57.107.100 msmpeg4
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/1000000 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-05-27T14:37:50.000000Z
    
      handler_name    : L-SMASH Audio Handler
    
      encoder         : Lavc57.107.100 wmav2
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 31 times
    
frame=  228 fps=0.0 q=2.0 size=     291kB time=00:00:09.45 bitrate= 252.4kbits/s speed=18.9x    
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 1 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
    Last message repeated 1 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
    Last message repeated 1 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
    Last message repeated 5 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 2 times
    
frame=  449 fps=449 q=2.0 size=     663kB time=00:00:18.98 bitrate= 286.2kbits/s speed=  19x    
    
frame=  629 fps=418 q=1.6 size=    1307kB time=00:00:26.16 bitrate= 409.2kbits/s speed=17.4x    
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 30 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 7 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 2 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 34 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 1 times
    
frame=  821 fps=410 q=2.0 size=    1960kB time=00:00:34.26 bitrate= 468.7kbits/s speed=17.1x    
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 71 times
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 2 dct coefficients to -127..127
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 82 times
    
frame= 1026 fps=409 q=2.0 size=    2695kB time=00:00:42.96 bitrate= 513.8kbits/s speed=17.1x    
    
[msmpeg4 @ 0x5648e407cb60] warning, clipping 1 dct coefficients to -127..127
    
    Last message repeated 102 times
    
frame= 1202 fps=400 q=1.6 size=    3754kB time=00:00:50.13 bitrate= 613.4kbits/s speed=16.7x  
    
......
    
frame=127987 fps=301 q=2.0 Lsize=  753842kB time=01:28:52.77 bitrate=1158.0kbits/s speed=12.6x    
    
video:650704kB audio:83244kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.710554%

    EDIT :
    My workaround was to encode to MPEG, doing this, i’m able to read my file and the frame rate is same as source. If someone knows why it couldn’t keep the original framerate in wmv, i’m still interested to know.

  • ffmpeg - Convert mkv to mp4 on ubuntu 18.10 error ?

    28 mars 2020, par ScipioAfricanus

    I am trying to convert some mkvs to mp4s on Ubuntu 18.10 with ffmpeg, and I keep getting the error below. Aby thoughts ?

    I am following https://linuxconfig.org/install-ffmpeg-on-ubuntu-18-04-bionic-beaver-linux#h2-operating-system-and-software-versions

    I have installed ffmpeg and installed :

    sudo apt install -y libopus-dev libmp3lame-dev libfdk-aac-dev libvpx-dev libx264-dev yasm libass-dev libtheora-dev libvorbis-dev mercurial cmake

    Command I ran with output :

    ffmpeg -i 'video.mkv' -codec copy 'video.mp4' -strict -2 -y
    
ffmpeg version 4.0.2-2 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 8 (Ubuntu 8.2.0-7ubuntu1)
    
  configuration: --prefix=/usr --extra-version=2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --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      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Trailing options were found on the commandline.
    
Input #0, matroska,webm, from 'ALL nyannyancosplay tik toks (Chronological order) (HD-720p)-WxewnMF4j6Y.mkv':
    
  Metadata:
    
    COMPATIBLE_BRANDS: iso6avc1mp41
    
    MAJOR_BRAND     : dash
    
    MINOR_VERSION   : 0
    
    ENCODER         : Lavf58.12.100
    
  Duration: 00:27:39.74, start: -0.007000, bitrate: 834 kb/s
    
    Stream #0:0: Video: h264 (Main), yuv420p(progressive), 790x720 [SAR 1:1 DAR 79:72], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
    
    Metadata:
    
      HANDLER_NAME    : ISO Media file produced by Google Inc. Created on: 01/13/2019.
    
      DURATION        : 00:27:39.724000000
    
    Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
    
    Metadata:
    
      DURATION        : 00:27:39.741000000
    
[mp4 @ 0x560e85326100] track 1: codec frame size is not set
    
[mp4 @ 0x560e85326100] opus in MP4 support is experimental, add '-strict -2' if you want to use it.
    
Could not write header for output file #0 (incorrect codec parameters ?): Experimental feature
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
    Last message repeated 1 times

    I also tried adding -strict -2 to no avail.

  • How to compile ffmpeg to get only mp3 and mp4 support

    19 février 2019, par Enis Jasarovic

    I’m building Electron app and I use ffmpeg to convert m4a or webm files to mp3, and also to merge video only mp4 with m4a audio file to mp4.

    I am able to achieve this using [media-autobuild-suite] (https://github.com/jb-alvarado/media-autobuild_suite), using light build option, but the size of static files is arround 20mb and I’would like to shrink it a little bit more. I’ve compiled ffmpeg and ffprobe with this configuration.

    --disable-libaom
    
--disable-version3
    
# Full
    
--disable-chromaprint
    
--disable-cuda-sdk
    
--disable-decklink
    
--disable-frei0r
    
--disable-libbs2b
    
--disable-libcaca
    
--disable-libcdio
    
--disable-libfdk-aac
    
--disable-libflite
    
--disable-libfribidi
    
--disable-libgme
    
--disable-libgsm
    
--disable-libilbc
    
--disable-libkvazaar
    
--disable-libmodplug
    
--disable-libnpp
    
--disable-libopenh264
    
--disable-libopenmpt
    
--disable-librtmp
    
--disable-librubberband
    
--disable-libssh
    
--disable-libtesseract
    
--disable-libxavs
    
--disable-libzmq
    
--disable-libzvbi
    
--disable-opencl
    
--disable-opengl
    
--disable-libvmaf
    
--disable-libcodec2
    
--disable-libsrt
    
--disable-ladspa
    
--disable-ffplay
    
#--enable-vapoursynth
    
#--enable-liblensfun
    
--disable-libndi_newtek
    

    
--enable-demuxer=mp3
    
--enable-demuxer=mov
    
--enable-demuxer=opus
    

    
--enable-parser=ac3
    
--enable-parser=mpegaudio
    
--enable-parser=h264
    
--enable-parser=opus
    

    
--enable-protocol=file
    
--enable-protocol=pipe
    

    
--enable-decoder=mp3
    
--enable-decoder=mp4
    
--enable-decoder=opus
    

    
--enable-encoder=mp3
    
--enable-encoder=mp4
    
--enable-encoder=opus

    With this configuration I’m getting ffmpeg static file arround 2mb and ffprobe static file arround 2mb but with this error.

    C:\Users\Admin\Desktop\ffmpeg compilations\2mb\local64>ffmpeg -i simple.m4a simple.mp3 
    
ffmpeg version N-93147-g9326117bf6 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 8.2.1 (Rev1, Built by MSYS2 project) 20181214
    
configuration:  .... //here comes configuration as described above
    
libavutil      56. 26.100 / 56. 26.100
    
libavcodec     58. 47.102 / 58. 47.102
    
libavformat    58. 26.101 / 58. 26.101
    
libavdevice    58.  6.101 / 58.  6.101
    
libavfilter     7. 48.100 /  7. 48.100
    
libswscale      5.  4.100 /  5.  4.100
    
libswresample   3.  4.100 /  3.  4.100
    
libpostproc    55.  4.100 / 55.  4.100
    
Guessed Channel Layout for Input Stream #0.0 : stereo
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'simple.m4a':
    
Metadata:
    
  major_brand     : dash
    
  minor_version   : 0
    
  compatible_brands: iso6mp41
    
  creation_time   : 2018-10-31T19:47:32.000000Z
    
Duration: 00:02:38.92, start: 0.000000, bitrate: 127 kb/s
    
Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, 7 kb/s (default)
    
Metadata:
    
  creation_time   : 2018-10-31T19:47:32.000000Z
    
  handler_name    : SoundHandler
    
[NULL @ 0000000000486200] Unable to find a suitable output format for 'simple.mp3' 
    
simple.mp3: Invalid argument

    Any ideas what else should I include into this static file ?

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