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Autres articles (58)
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Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
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Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
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Dépôt de média et thèmes par FTP
31 mai 2013, parL’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...)
Sur d’autres sites (7340)
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WebVTT Audio Descriptions for Elephants Dream
10 mars 2015, par silviaWhen I set out to improve accessibility on the Web and we started developing WebSRT – later to be renamed to WebVTT – I needed an example video to demonstrate captions / subtitles, audio descriptions, transcripts, navigation markers and sign language.
I needed a freely available video with spoken text that either already had such data available or that I could create it for. Naturally I chose “Elephants Dream” by the Orange Open Movie Project , because it was created under the Creative Commons Attribution 2.5 license.
As it turned out, the Blender Foundation had already created a collection of SRT files that would represent the English original as well as the translated languages. I was able to reuse them by merely adding a WEBVTT header.
Then there was a need for a textual audio description. I read up on the plot online and finally wrote up a time-alignd audio description. I’m hereby making that file available under the Create Commons Attribution 4.0 license. I’ve added a few lines to the medadata headers so it doesn’t confuse players. Feel free to reuse at will – I know there are others out there that have a similar need to demonstrate accessibility features.
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How to swtich audio stream with ffmpeg ?
6 octobre 2022, par JasonI have a file which has both english and japanese audio tracks. This is the meta data of the file (using command ffmpeg -i "my_vid.mp4" :


Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'my_vid.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2mp41
 encoder : Lavf58.76.100
 Duration: 00:27:13.14, start: 0.000000, bitrate: 1699 kb/s
 Chapters:
 Chapter #0:0: start 0.000000, end 263.012000
 Metadata:
 title : Chapter 01
 Chapter #0:1: start 263.012000, end 353.019000
 Metadata:
 title : Chapter 02
 Chapter #0:2: start 353.019000, end 891.098000
 Metadata:
 title : Chapter 03
 Chapter #0:3: start 891.098000, end 1535.075000
 Metadata:
 title : Chapter 04
 Chapter #0:4: start 1535.075000, end 1624.080000
 Metadata:
 title : Chapter 05
 Chapter #0:5: start 1624.080000, end 1633.140000
 Metadata:
 title : Chapter 06
 Stream #0:0[0x1](und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv), 1920x1080 [SAR 1:1 DAR 16:9], 1413 kb/s, 23.98 fps, 23.98 tbr, 16k tbn (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 136 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]
 Stream #0:2[0x3](jpn): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 137 kb/s
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]
 Stream #0:3[0x4](eng): Data: bin_data (text / 0x74786574)
 Metadata:
 handler_name : SubtitleHandler


Per the ffmpeg documentation I'm trying to switch the video's audio output to japanese. However, the output video is still in english (which it was in before). This is my current ffmpeg cmd :


ffmpeg -i "my_vid.mp4" -c copy -disposition:a:1 default "output.mp4"


what am I doing wrong ? Still pretty new to ffmpeg


Edit :


With one of the suggestions I tried adding the -map 0 option to my command


ffmpeg -i "my_vid.mp4" -map 0 -c copy -disposition:a:2 default "output.mp4"


but still not change. The meta data for the output video is as follows :


Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2mp41
 encoder : Lavf59.33.100
 Duration: 00:27:13.14, start: 0.000000, bitrate: 1699 kb/s
 Chapters:
 Chapter #0:0: start 0.000000, end 263.012000
 Metadata:
 title : Chapter 01
 Chapter #0:1: start 263.012000, end 353.019000
 Metadata:
 title : Chapter 02
 Chapter #0:2: start 353.019000, end 891.098000
 Metadata:
 title : Chapter 03
 Chapter #0:3: start 891.098000, end 1535.075000
 Metadata:
 title : Chapter 04
 Chapter #0:4: start 1535.075000, end 1624.080000
 Metadata:
 title : Chapter 05
 Chapter #0:5: start 1624.080000, end 1633.140000
 Metadata:
 title : Chapter 06
 Stream #0:0[0x1](und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv), 1920x1080 [SAR 1:1 DAR 16:9], 1413 kb/s, 23.98 fps, 23.98 tbr, 16k tbn (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 136 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]
 Stream #0:2[0x3](jpn): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 137 kb/s
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]
 Stream #0:3[0x4](eng): Data: bin_data (gpmd / 0x646D7067)
 Metadata:
 handler_name : SubtitleHandler
 Stream #0:4[0x5](eng): Data: bin_data (text / 0x74786574)
 Metadata:
 handler_name : SubtitleHandler


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ffmpeg subtitles to overlay by language
21 mars 2017, par Milan Čížekmy stream looks like this :
Input #0, mpegts, from 'udp://@...':
Duration: N/A, start: 19316.897278, bitrate: N/A
Program 504
Stream #0:0[0x13b1], 125, 1/90000: Video: mpeg2video (Main), 1 reference frame ([2][0][0][0] / 0x0002), yuv420p(tv, top first, left), 720x576 [SAR 64:45 DAR 16:9], 0/1, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x13b2], 208, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 256 kb/s
Stream #0:2[0x1541](srp), 4, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:3[0x1542](slv), 3, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:4[0x1543](hrv), 4, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:5[0x1544](cze), 3, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:6[0x1545](hun), 4, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:7[0x1546](ron), 3, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:8[0x1547](alb), 4, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:9[0x1548](bul), 5, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:10[0x13b9](eng), 127, 1/90000: Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)I try to add english subtitles into output video, but number of subtitles/languages is variable in time. I need select required subtitles by language. How can I do ? Here is my not working example. Thank you.
ffmpeg -i "udp://@..." -map s:eng -sn -map v:0 -profile:v baseline
-c:v libx264 -b:v 1500k -maxrate 2200k -filter_complex [0:v][0:s]overlay -c:a libfdk_aac -b:a 128k /test.ts
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