Ao dividir MP4s com ffmpeg, como incluo metadados?

Question

Ao dividir MP4s com ffmpeg, como incluo metadados?

#1 resposta do (2 votos)

8

Eu tenho alguns MP4s que eu quero enviar para minha conta do Flickr, mas eles têm um tamanho máximo de 500MB como o meu é apenas cerca de 550 eu estava planejando simplesmente dividi-los ao meio e enviá-los, mas eu quero ter certeza Todos os metadados estão incluídos, mas não parecem ser. Eu tentei cada um dos seguintes sem sorte, (no final deste post eu tenho o original e as novas saídas ffprobe):

ffmpeg -ss 00:00:00.00 -t 00:04:19.35 -i SANY0069.MP4 -acodec copy -vcodec copy -map_metadata 0:0 SANY0069A.MP4

ffmpeg -ss 00:00:00.00 -t 00:04:19.35 -i SANY0069.MP4 -acodec copy -vcodec copy -map_meta_data SANY0069.MP4:SANY0069A.MP4 SANY0069A.MP4

com este eu produzi manualmente as meta tags individuais que eu tirei deste comando

ffmpeg -i SANY0069A.MP4 -f ffmetadata meta.txt
ffmpeg -ss 00:00:00.00 -t 00:04:19.35 -i SANY0069.MP4 -acodec copy -vcodec copy -metadata major_brand="mp42" -metadata minor_version="1" -metadata compatible_brands="mp42avc1" -metadata creation_time="2012-09-29 09:05:50" -metadata comment="SANYO DIGITAL CAMERA CA9" -metadata comment-eng="SANYO DIGITAL CAMERA CA9" SANY0069A.MP4

usando a saída do comando anterior eu também tentei isto:

ffmpeg -ss 00:00:00.00 -t 00:04:19.35 -i SANY0069.MP4 -acodec copy -vcodec copy -f ffmetadata -i meta.txt SANY0069A.MP4

Saída: exemplo de saída do meu primeiro comando:

ffmpeg -ss 00:00:00.00 -t 00:04:19.35 -i SANY0069.MP4 -acodec copy -vcodec copy -map_metadata 0:0 SANY0069A.MP4
ffmpeg version 0.8.12, Copyright (c) 2000-2011 the FFmpeg developers
  built on Jun 13 2012 09:57:38 with gcc 4.6.3 20120306 (Red Hat 4.6.3-2)
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --enable-bzlib --enable-libcelt --enable-libdc1394 --enable-libdirac --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
  libavutil    51.  9. 1 / 51.  9. 1
  libavcodec   53.  8. 0 / 53.  8. 0
  libavformat  53.  5. 0 / 53.  5. 0
  libavdevice  53.  1. 1 / 53.  1. 1
  libavfilter   2. 23. 0 /  2. 23. 0
  libswscale    2.  0. 0 /  2.  0. 0
  libpostproc  51.  2. 0 / 51.  2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'SANY0069.MP4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: mp42avc1
    creation_time   : 2012-09-29 09:05:50
    comment         : SANYO DIGITAL CAMERA CA9
    comment-eng     : SANYO DIGITAL CAMERA CA9
  Duration: 00:08:38.71, start: 0.000000, bitrate: 9142 kb/s
    Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 9007 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
    Metadata:
      creation_time   : 2012-09-29 09:05:50
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 127 kb/s
    Metadata:
      creation_time   : 2012-09-29 09:05:50
File 'SANY0069A.MP4' already exists. Overwrite ? [y/N] y
Output #0, mp4, to 'SANY0069A.MP4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: mp42avc1
    creation_time   : 2012-09-29 09:05:50
    comment         : SANYO DIGITAL CAMERA CA9
    comment-eng     : SANYO DIGITAL CAMERA CA9
    encoder         : Lavf53.5.0
    Stream #0.0(eng): Video: libx264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], q=2-31, 9007 kb/s, 30k tbn, 29.97 tbc
    Metadata:
      creation_time   : 2012-09-29 09:05:50
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, 127 kb/s
    Metadata:
      creation_time   : 2012-09-29 09:05:50
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop, [?] for help
frame= 7773 fps=4644 q=-1.0 Lsize=  289607kB time=00:04:19.35 bitrate=9147.4kbits/s    
video:285416kB audio:4033kB global headers:0kB muxing overhead 0.054571%

e finalmente, quando eu comparo o ffprobe do original e a primeira parte dividida eu recebo as 2 saídas seguintes: original

ffprobe version 0.8.12, Copyright (c) 2007-2011 the FFmpeg developers
  built on Jun 13 2012 09:57:38 with gcc 4.6.3 20120306 (Red Hat 4.6.3-2)
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --enable-bzlib --enable-libcelt --enable-libdc1394 --enable-libdirac --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
  libavutil    51.  9. 1 / 51.  9. 1
  libavcodec   53.  8. 0 / 53.  8. 0
  libavformat  53.  5. 0 / 53.  5. 0
  libavdevice  53.  1. 1 / 53.  1. 1
  libavfilter   2. 23. 0 /  2. 23. 0
  libswscale    2.  0. 0 /  2.  0. 0
  libpostproc  51.  2. 0 / 51.  2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'SANY0069.MP4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: mp42avc1
    creation_time   : 2012-09-29 09:05:50
    comment         : SANYO DIGITAL CAMERA CA9
    comment-eng     : SANYO DIGITAL CAMERA CA9
  Duration: 00:08:38.71, start: 0.000000, bitrate: 9142 kb/s
    Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 9007 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
    Metadata:
      creation_time   : 2012-09-29 09:05:50
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 127 kb/s
    Metadata:
      creation_time   : 2012-09-29 09:05:50

Divisão

ffprobe version 0.8.12, Copyright (c) 2007-2011 the FFmpeg developers
  built on Jun 13 2012 09:57:38 with gcc 4.6.3 20120306 (Red Hat 4.6.3-2)
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --enable-bzlib --enable-libcelt --enable-libdc1394 --enable-libdirac --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
  libavutil    51.  9. 1 / 51.  9. 1
  libavcodec   53.  8. 0 / 53.  8. 0
  libavformat  53.  5. 0 / 53.  5. 0
  libavdevice  53.  1. 1 / 53.  1. 1
  libavfilter   2. 23. 0 /  2. 23. 0
  libswscale    2.  0. 0 /  2.  0. 0
  libpostproc  51.  2. 0 / 51.  2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'SANY0069A.MP4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.5.0
    comment         : SANYO DIGITAL CAMERA CA9
  Duration: 00:04:19.37, start: 0.000000, bitrate: 9146 kb/s
    Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 9015 kb/s, 29.97 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

Eu sei que isso é incrivelmente longo, mas na verdade é uma questão bem simples. Eu pensei que seria melhor fornecer o máximo de detalhes possível.

qualquer conselho aqui seria ótimo,

Obrigado

ffmpeg mp4 metadata fedora linux

por Josh 26.11.2012 / 06:39

1 resposta

Tags ffmpeg mp4 metadata fedora linux

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score 2 · Answer 1

O FFmpeg deve transportar os metadados automaticamente (tente sem -map_metadata e veja se isso funciona), mas se isso não acontecer você deve tentar usar -map_metadata 0 em vez de -map_metadata 0:0 - o :0 se refere a o primeiro fluxo de dados (provavelmente o vídeo) e o ffmpeg pode estar tentando copiar apenas os metadados específicos do fluxo, em vez do arquivo inteiro.