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  • merge (video and sound) with (background music)

    27 novembre 2016, par Nir di

    i have video file vid.mpg that contain video and audio(speaking) and audio file aud.wav that contain background music.

    now, i want to merge them together.

    here is the command that i use :

    ffmpeg -i vid.mpg -i aud.mp3 -c:v copy  -filter_complex "[0:a]aformat = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a][1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg

    and this is the error that i get as response :

    [Parsed_amerge_4 @ 00000000003a36e0] No channel layout for input 1
    
[Parsed_amerge_4 @ 00000000003a36e0] Input channel layouts overlap: output layou
    
t will be determined by the number of distinct input channels
    
[mpeg @ 000000000289a4e0] VBV buffer size not set, using default size of 130KB
    
If you want the mpeg file to be compliant to some specification
    
Like DVD, VCD or others, make sure you set the correct buffer size

    in addition i add the full log :

    C:\bina\ffmpeg\bin>ffmpeg -i vid.mpg -i
    
aud.mp3 -c:v copy  -filter_complex "[1:a]aform
    
at = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a]
    
[1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg
    
ffmpeg version N-78949-g6f5048f Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.3.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
    
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
    
ibilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopenc
    
ore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --ena
    
ble-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable
    
-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --ena
    
ble-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx
    
264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable
    
-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 19.100 / 55. 19.100
    
  libavcodec     57. 27.101 / 57. 27.101
    
  libavformat    57. 28.100 / 57. 28.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 39.100 /  6. 39.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mpeg, from 'vid.mpg':
    
  Duration: 00:00:33.62, start: 0.529978, bitrate: 22407 kb/s
    
    Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 1920x1080 [SAR 1:
    
1 DAR 16:9], max. 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 192 kb/s
    
[mp3 @ 00000000003e3c20] Skipping 0 bytes of junk at 253.
    
Input #1, mp3, from 'aud.mp3':
    
  Metadata:
    
    encoder         : Lavf57.28.100
    
  Duration: 00:01:03.03, start: 0.025057, bitrate: 128 kb/s
    
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc57.27
    
File 'out.mpg' already exists. Overwrite
    
 ? [y/N] y
    
[Parsed_amerge_4 @ 00000000003a36e0] No channel layout for input 1
    
[Parsed_amerge_4 @ 00000000003a36e0] Input channel layouts overlap: output layou
    
t will be determined by the number of distinct input channels
    
[mpeg @ 000000000289a4e0] VBV buffer size not set, using default size of 130KB
    
If you want the mpeg file to be compliant to some specification
    
Like DVD, VCD or others, make sure you set the correct buffer size
    
Output #0, mpeg, to 'out.mpg':
    
  Metadata:
    
    encoder         : Lavf57.28.100
    
    Stream #0:0: Video: mpeg2video, yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-3
    
1, max. 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
    
    Stream #0:1: Audio: mp2, 44100 Hz, stereo, s16, 384 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc57.27.101 mp2
    
Stream mapping:
    
  Stream #1:0 (mp3) -> aformat
    
  Stream #1:0 (mp3) -> aformat
    
  Stream #0:0 -> #0:0 (copy)
    
  amerge -> Stream #0:1 (mp2)
    
Press [q] to stop, [?] for help
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=234676 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=234676 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=236705 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=236705 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=238746 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=238746 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=240787 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=240787 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=242828 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=242828 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=244869 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=244869 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=246910 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=246910 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=248951 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=248951 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=250992 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=250992 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=253033 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=253033 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=255074 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=255074 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=257115 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=257115 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=259156 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=259156 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=261197 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=261197 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=263238 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=263238 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=265279 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=265279 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=267320 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=267320 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=269361 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=269361 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=271402 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=271402 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=273443 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=273443 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=275484 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=275484 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=277525 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=277525 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=279566 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=279566 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=281607 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=281607 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=283648 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=283648 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=285689 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=285689 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=287730 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=287730 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=289771 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=289771 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=291812 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=291812 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=293853 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=293853 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=295894 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=295894 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=297935 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=297935 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=299976 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=299976 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=302017 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=302017 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=304058 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=304058 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=306099 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=306099 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=308140 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=308140 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=310181 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=310181 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=312222 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=312222 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=314263 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=314263 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=316304 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=316304 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=318345 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=318345 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=320386 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=320386 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=322427 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=322427 size=322616
    
frame=    1 fps=0.0 q=-1.0 Lsize=     318kB time=00:00:00.00 bitrate=N/A speed=
    
  0x
    
video:315kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing o
    
verhead: 0.934858%
    

    
C:\bina\ffmpeg\bin>ffmpeg -i vid.mpg -i
    
aud.mp3 -c:v copy  -filter_complex "[0:a]aform
    
at = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a]
    
[1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg

    what am i doing wrong ? and how can i solve it ?

    please help.

  • ffmpeg : Combine/merge multiple mp4 videos - not working

    9 juin 2016, par dtbaker

    Here is the command I am using to combine multiple videos :

    ffmpeg -i 75_540_38HQ2.mp4 -i 76_70_20.mp4 -i 76_173_80.mp4 -i 81_186_35.mp4 -vcodec copy -acodec copy Mux1.mp4

    The resulting Mux1.mp4 does not contain all videos. Only the first video (75_540_38HQ2.mp4). The file size of the source and resulting video is below (as you can see, resulting video is slightly larger than first vid) :

    $ ls -lh

    - rw-r—r— 1 dbaker dbaker  42M 2011-03-24 11:59 75_540_38HQ2.mp4

    - rw-r—r— 1 dbaker dbaker 236M 2011-03-24 12:09 76_173_80.mp4

    - rw-r—r— 1 dbaker dbaker  26M 2011-03-24 12:05 76_70_20.mp4

    - rw-r—r— 1 dbaker dbaker  54M 2011-03-24 12:15 81_186_35.mp4

    - rw-r—r— 1 dbaker dbaker  44M 2011-03-24 14:48 Mux1.mp4

    Here is the output of the ffmpeg command. To me it looks ok, showing the multiple source inputs and the single output.

    FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  built on Mar 21 2011 18:05:32 with gcc 4.4.5
  configuration : —enable-gpl —enable-version3 —enable-nonfree —enable-postproc —enable-libfaac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxvid —enable-x11grab
  libavutil     50.36. 0 / 50.36. 0
  libavcore      0.16. 1 /  0.16. 1
  libavcodec    52.108. 0 / 52.108. 0
  libavformat   52.93. 0 / 52.93. 0
  libavdevice   52. 2. 3 / 52. 2. 3
  libavfilter    1.74. 0 /  1.74. 0
  libswscale     0.12. 0 /  0.12. 0
  libpostproc   51. 2. 0 / 51. 2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ’75_540_38HQ2.mp4’ :
  Metadata :
    major_brand : isom
    minor_version : 512
    compatible_brands : isomiso2avc1mp41
    creation_time : 1970-01-01 00:00:00
    encoder : Lavf52.93.0
  Duration : 00:00:29.99, start : 0.000000, bitrate : 11517 kb/s
    Stream #0.0(eng) : Video : h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 11575 kb/s, 29.94 fps, 29.97 tbr, 30k tbn, 59.94 tbc
    Metadata :
      creation_time : 1970-01-01 00:00:00
    Stream #0.1(eng) : Audio : aac, 48000 Hz, stereo, s16, 127 kb/s
    Metadata :
      creation_time : 1970-01-01 00:00:00
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from ’76_70_20.mp4’ :
  Metadata :
    major_brand : isom
    minor_version : 512
    compatible_brands : isomiso2avc1mp41
    creation_time : 1970-01-01 00:00:00
    encoder : Lavf52.93.0
  Duration : 00:00:19.98, start : 0.000000, bitrate : 10901 kb/s
    Stream #1.0(eng) : Video : h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 10804 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
    Metadata :
      creation_time : 1970-01-01 00:00:00
    Stream #1.1(eng) : Audio : aac, 48000 Hz, stereo, s16, 128 kb/s
    Metadata :
      creation_time : 1970-01-01 00:00:00
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from ’76_173_80.mp4’ :
  Metadata :
    major_brand : isom
    minor_version : 512
    compatible_brands : isomiso2avc1mp41
    creation_time : 1970-01-01 00:00:00
    encoder : Lavf52.93.0
  Duration : 00:03:09.99, start : 0.000000, bitrate : 10393 kb/s
    Stream #2.0(eng) : Video : h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 10321 kb/s, 29.96 fps, 29.97 tbr, 30k tbn, 59.94 tbc
    Metadata :
      creation_time : 1970-01-01 00:00:00
    Stream #2.1(eng) : Audio : aac, 48000 Hz, stereo, s16, 128 kb/s
    Metadata :
      creation_time : 1970-01-01 00:00:00

    Seems stream 0 codec frame rate differs from container frame rate : 119.88 (120000/1001) -> 30000.00 (30000/1)
    
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from ’81_186_35.mp4’ :
    
  Metadata :
    
    major_brand : isom
    
    minor_version : 512
    
    compatible_brands : isomiso2avc1mp41
    
    creation_time : 1970-01-01 00:00:00
    
    encoder : Lavf52.93.0
    
  Duration : 00:00:35.00, start : 0.000000, bitrate : 12700 kb/s
    
    Stream #3.0(eng) : Video : h264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 12620 kb/s, 59.91 fps, 30k tbr, 60k tbn, 119.88 tbc
    
    Metadata :
    
      creation_time : 1970-01-01 00:00:00
    
    Stream #3.1(eng) : Audio : aac, 48000 Hz, stereo, s16, 128 kb/s
    
    Metadata :
    
      creation_time : 1970-01-01 00:00:00
    
Output #0, mp4, to ’Mux1.mp4’ :
    
  Metadata :
    
    major_brand : isom
    
    minor_version : 512
    
    compatible_brands : isomiso2avc1mp41
    
    creation_time : 1970-01-01 00:00:00
    
    encoder : Lavf52.93.0
    
    Stream #0.0(eng) : Video : libx264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], q=2-31, 11575 kb/s, 30k tbn, 29.97 tbc
    
    Metadata :
    
      creation_time : 1970-01-01 00:00:00
    
    Stream #0.1(eng) : Audio : libfaac, 48000 Hz, stereo, 128 kb/s
    
    Metadata :
    
      creation_time : 1970-01-01 00:00:00
    
Stream mapping :
    
  Stream #0.0 -> #0.0
    
  Stream #2.1 -> #0.1
    
Press [q] to stop encoding
    
frame=  883 fps=632 q=-1.0 Lsize=   44730kB time=29.40 bitrate=12465.1kbits/s    
    
video:41678kB audio:2969kB global headers:0kB muxing overhead 0.184548%

    Am I doing something blindingly stupid here ?

    The source videos came from a video camera, and are small snippets taken with ffmpeg -i bigfile.mp4 -ss 20 -t 10 -vcodec copy etc..

    Thanks heaps !!
    Dave

    Edit : couldn’t solve it so I just use avidemux GUI tool. It seemed to append the MP4’s just fine.

    Must be a problem with MP4’s or just the ones that come off a gopro camera.

  • Problems with FFMPEG concat and/or MP4BOX

    11 novembre 2016, par user3730954

    I’ve been searching for a reliable way to concat a large (>30) number of mp4 files.

    My methods so far have been trying the MP4BOX concat CLI, and FFMPEG’s concat filter (such as ffmpeg -auto_convert 1 -y -f concat -i files.txt -c copy out.mp4).

    Both tools produce the same problem : joining 2 or 3 files seems to work great, but any greater number produces a corrupted mp4 file (such as https://drive.google.com/file/d/0B_mWxBuwYcSgQjQtUnpQeUxVTm8/view). I can create a workaround where I join only 2 videos at a time, until all videos have been joined, but this does not work for an odd number of joins (i.e. 13).

    Why do these methods work on some files, but not others ?

    FFPROBE produces errors as you would expect on these corrupted files :

    error while decoding MB x y, bytestream z
    
Reference 2 >= 2
    
top block unavailable for requested intra mode

    example FFMPEG output :

    ffmpeg version N-80901-gfebc862 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
    
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab
    
  libavutil      55. 28.100 / 55. 28.100
    
  libavcodec     57. 48.101 / 57. 48.101
    
  libavformat    57. 41.100 / 57. 41.100
    
  libavdevice    57.  0.102 / 57.  0.102
    
  libavfilter     6. 47.100 /  6. 47.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  1.100 /  2.  1.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x36b3a80] Auto-inserting h264_mp4toannexb bitstream filter
    
Input #0, concat, from 'twitter-files.txt':
    
  Duration: N/A, start: 0.000000, bitrate: 415 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 284 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 130 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler
    
[mp4 @ 0x36b7dc0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
    
    Last message repeated 1 times
    
Output #0, mp4, to 'twitter-tmp.mp4':
    
  Metadata:
    
    encoder         : Lavf57.41.100
    
    Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=2-31, 284 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 130 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x3733160] Auto-inserting h264_mp4toannexb bitstream filter
    
    Last message repeated 1 times
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x3733140] Auto-inserting h264_mp4toannexb bitstream filter
    
[mp4 @ 0x36b7dc0] Packet with invalid duration -512 in stream 1
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x3733140] Auto-inserting h264_mp4toannexb bitstream filter
    
    Last message repeated 2 times
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x36ba960] Auto-inserting h264_mp4toannexb bitstream filter
    
[mp4 @ 0x36b7dc0] Packet with invalid duration -512 in stream 1
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x36ba960] Auto-inserting h264_mp4toannexb bitstream filter
    
    Last message repeated 4 times
    
[mp4 @ 0x36b7dc0] Non-monotonous DTS in output stream 0:0; previous: 306957, current: 306445; changing to 306958. This may result in incorrect timestamps in the output file.
    
[mp4 @ 0x36b7dc0] Non-monotonous DTS in output stream 0:0; previous: 306958, current: 306957; changing to 306959. This may result in incorrect timestamps in the output file.
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x36ba960] Auto-inserting h264_mp4toannexb bitstream filter
    
    Last message repeated 1 times
    
frame=  750 fps=0.0 q=-1.0 Lsize=    1088kB time=00:00:30.04 bitrate= 296.6kbits/s speed= 366x

    OSX output :

    ffmpeg version 3.0 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with Apple LLVM version 7.3.0 (clang-703.0.31)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.0 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-libvorbis --enable-libvpx --enable-vda
    
  libavutil      55. 17.103 / 55. 17.103
    
  libavcodec     57. 24.102 / 57. 24.102
    
  libavformat    57. 25.100 / 57. 25.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 31.100 /  6. 31.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c49808c00] Auto-inserting h264_mp4toannexb bitstream filter
    
Input #0, concat, from 'twitter-files.txt':
    
  Duration: N/A, start: 0.000000, bitrate: 415 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 284 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 130 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler
    
Output #0, mp4, to 'tmp-twitter.mp4':
    
  Metadata:
    
    encoder         : Lavf57.25.100
    
    Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=2-31, 284 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 130 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c4a005400] Auto-inserting h264_mp4toannexb bitstream filter
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c4a800000] Auto-inserting h264_mp4toannexb bitstream filter
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c49800000] Auto-inserting h264_mp4toannexb bitstream filter
    
[mp4 @ 0x7f9c4a000c00] Packet with invalid duration -512 in stream 1
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c49800000] Auto-inserting h264_mp4toannexb bitstream filter
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c4a800000] Auto-inserting h264_mp4toannexb bitstream filter
    
    Last message repeated 1 times
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c49800000] Auto-inserting h264_mp4toannexb bitstream filter
    
[mp4 @ 0x7f9c4a000c00] Packet with invalid duration -512 in stream 1
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c49800000] Auto-inserting h264_mp4toannexb bitstream filter
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c4a800000] Auto-inserting h264_mp4toannexb bitstream filter
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c4a005400] Auto-inserting h264_mp4toannexb bitstream filter
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c4a800e00] Auto-inserting h264_mp4toannexb bitstream filter
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c49800000] Auto-inserting h264_mp4toannexb bitstream filter
    
[mp4 @ 0x7f9c4a000c00] Non-monotonous DTS in output stream 0:0; previous: 306957, current: 306445; changing to 306958. This may result in incorrect timestamps in the output file.
    
[mp4 @ 0x7f9c4a000c00] Non-monotonous DTS in output stream 0:0; previous: 306958, current: 306957; changing to 306959. This may result in incorrect timestamps in the output file.
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c49800000] Auto-inserting h264_mp4toannexb bitstream filter
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9c49010e00] Auto-inserting h264_mp4toannexb bitstream filter
    
frame=  750 fps=0.0 q=-1.0 Lsize=    1146kB time=00:00:30.04 bitrate= 312.4kbits/s speed= 192x  

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