Eu tenho alguns MP4s que eu quero enviar para minha conta do flickr, mas eles têm um tamanho máximo de 500mb, já que o meu é apenas cerca de 550, eu estava planejando simplesmente dividi-los ao meio e depois enviá-los, mas quero ter certeza de que todas as meta os dados são incluídos, mas não parecem ser. Eu tentei cada um dos seguintes sem sorte (no final deste post, tenho as saídas originais e as novas 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 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 antigo comando, também tentei o seguinte:
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: saída de amostra 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 comparo o ffprobe do original e a primeira parte dividida, recebo as 2 seguintes saídas: 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
Dividido
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 é realmente uma pergunta bastante simples. Eu pensei que seria melhor fornecer o máximo de detalhes possível.
qualquer conselho aqui seria ótimo,
obrigado
creation_time
(a menos que seja omitido) ecomment
são definidos automaticamente. O comportamento decreation_time
parece variar entre0.8.12
e ffmpeg atual do Git; não parece adicionar / copiar isso, a menos que eu o inclua. Eu não me referi ao código, mas não copiarcreation_time
ao copiar fluxos pode ou não ser considerado um bug, dependendo de quem você pergunta.Respostas:
O FFmpeg deve carregar os metadados automaticamente (portanto, tente sem
-map_metadata
ver se isso funciona), mas se não funcionar, tente usar em-map_metadata 0
vez de-map_metadata 0:0
- o:0
que se refere ao primeiro fluxo de dados (provavelmente o vídeo), e o ffmpeg pode estar tentando copiar somente os metadados específicos do fluxo, e não o arquivo inteiro.fonte