
Recherche avancée
Médias (1)
-
Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (39)
-
Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...) -
Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...) -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.
Sur d’autres sites (4873)
-
ffmpeg : Generate empty audio and video (working for video)
17 septembre 2021, par David FerrisI'm trying to generate a black video with FFMPEG. I have accomplished this with the following :


ffmpeg -t 5 -f lavfi -i color=c=black:s=1920x1080 -c:v libx264 -tune stillimage -pix_fmt yuv420p out.mp4



Unfortunately this video doesn't have any audio tracks. Following this, I have tried to insert -i anullsrc=channel_layout=stereo:sample_rate=44100 :


ffmpeg -t 5 -i anullsrc=channel_layout=stereo:sample_rate=44100 -f lavfi -i color=c=black:s=1920x1080 -c:v libx264 -tune stillimage -pix_fmt yuv420p out.mp4



Unfortunately this gives the error :




anullsrc=channel_layout=stereo:sample_rate=44100 : No such file or
directory




How can I modify my initial script to generate a video with empty audio ?


-
How to split video into parts audio/video/text in one command ?
22 novembre 2020, par lockwiseI have one video file
.mkv
.
Inside this file, there is a video track, 3 audio tracks, 2 subtitles, a poster file, and a backdrop file.
Does ffmpeg know how to split.mkv
into separate parts, video / 3 audio / 2 subtitles ?

~# ffmpeg -hide_banner -i input.mkv
Input #0, matroska,webm, from 'input.mkv':
 Duration: 01:37:03.90, start: 0.000000, bitrate: 3605 kb/s
 Metadata:
 title : 01:33:51.582
 Stream #0:0(eng): Video: h264 (High), yuv420p(tv, bt709, progressive), 1024x576 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
 Metadata:
 title : Video
 Stream #0:1(rus): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default)
 Metadata:
 title : MVO «West Video»
 Stream #0:2(spa): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
 Metadata:
 title : MVO Spain-1
 Stream #0:3(eng): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
 Metadata:
 title : MVO TRK
 Stream #0:4(eng): Subtitle: subrip (default)
 Metadata:
 title : RUS
 Stream #0:5(eng): Subtitle: subrip
 Metadata:
 title : Eng
 Stream #0:6(und): Video: mjpeg (Progressive), yuvj420p(pc, bt470bg/unknown/unknown), 780x1170 [SAR 1:1 DAR 2:3], 90k tbr, 90k tbn, 90k tbc (attached pic)
 Metadata:
 filename : poster.jpg
 mimetype : image/jpeg
 title : poster
 LANGUAGE : und
 Stream #0:7(und): Video: mjpeg (Progressive), yuvj420p(pc, bt470bg/unknown/unknown), 1280x719 [SAR 1:1 DAR 1280:719], 90k tbr, 90k tbn, 90k tbc (attached pic)
 Metadata:
 filename : backdrop.jpg
 mimetype : image/jpeg
 title : backdrop
 LANGUAGE : und



I need :


- 

- Video

- 

- input0.mp4




- Audio

- 

- input0.m4a
- input1.m4a
- input2.m4a








- Subtitle

- 

- input0.vtt
- input1.vtt














These commands do the splitting, but I need to know exactly how many audio files and how many subtitle files are in the
mkv
.

ffmpeg -y -i input.mkv \
 -map 0:v:0 -c:v libx264 output0.mp4



ffmpeg -y -i input.mkv \
 -map 0:a:0 -c:a aac output0.m4a \
 -map 0:a:1 -c:a aac output1.m4a \
 -map 0:a:2 -c:a aac output2.m4a



ffmpeg -y -i input.mkv \
 -map 0:s:0 output0.vtt \
 -map 0:s:1 output1.vtt



Is it possible to make such divisions without knowing the file number
0:a:2
,0:s:1
?

- Video

-
Ffmpeg : convert a video to an anamorphose video
16 janvier 2017, par AminesrineWhat does mean
convert a video to an anamorphose video
?I want to canvert a file
.avi
to ananamorphose video
, how can I do that with ffmpeg ?