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Personnaliser en ajoutant son logo, sa bannière ou son image de fond
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Publier sur MédiaSpip
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Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
Des sites réalisés avec MediaSPIP
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Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.
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GDPR Compliance Checklist : A Detailed Walkthrough
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Revision 29747 : On incrémente la version du plugin
8 juillet 2009, par kent1@… — LogOn incrémente la version du plugin
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Audio video duration matching for infinite dash loop pseudo live
19 janvier 2020, par Massimo VantaggioMay I ask help to understand how to match audio and video duration during ffmpeg encoding for a concatenation of videos destined to an infinite loop mpeg dash transmission (mp4box).
My issue happen during ffmpeg encoding :
first step for audio encoding and timebase uniformity of each video before the concat/encode process :
ffmpeg -y -i "$f" -c copy -video_track_timescale 90k -c:a aac -b:a 384k -ar 44100 -ac 2 -shortest -af aresample=async=1 ../buffer/${NAME}_buffer.mp4
Then concat/encode process in order to get total duration in seconds multiple of closed GOP
for example : cutting 373.5 duration to obtain 372.000 duration :ffmpeg -f concat -safe 0 -y -i list.txt -loop 1 -i ../logo/logo.png -c:a copy -c:v libx264 -x264opts keyint=$GOP:min-keyint=$GOP:no-scenecut -bf 0 -r $FPSC -b:v 4800k -maxrate 9600k -bufsize 19200k -profile:v main -crf 22 -filter_complex "[0:v][1:v]overlay=main_w-overlay_w-10:10,scale=1920:1080,setsar=1" -t $TOTDUR 1080set.mp4
the result
VIDEO FORMAT CONTAINER DURATION:
372.000000
VIDEO STREAM DURATION:
372.000000
AUDIO FORMAT CONTAINER DURATION:
372.006000I need help to understand why the audio duration counts 6 ms more than video duration and how to fix it.
I read about loop_stream should help ?
Thanks a lot !Below the videos info :
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: isomavc1
creation_time : 2007-05-09T07:55:25.000000Z
Duration: 00:01:29.22, start: 0.000000, bitrate: 7490 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x816, 7403 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
creation_time : 2007-05-09T07:55:25.000000Z
handler_name : GPAC ISO Video Handler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 94 kb/s (default)
Metadata:
creation_time : 2007-05-09T07:55:29.000000Z
handler_name : GPAC ISO Audio Handler
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: isomavc1
creation_time : 2007-07-17T09:18:37.000000Z
genre : Trailer
artist : Fox
title : The Simpsons Movie
date : 2007
Duration: 00:02:17.25, start: 0.000000, bitrate: 8591 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x800, 8486 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
creation_time : 2007-07-17T09:18:37.000000Z
handler_name : GPAC ISO Video Handler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, 5.1, fltp, 107 kb/s (default)
Metadata:
creation_time : 2007-07-17T09:18:45.000000Z
handler_name : GPAC ISO Audio Handler
Stream #0:2: Video: mjpeg (Progressive), yuvj420p(pc, bt470bg/unknown/unknown), 101x150 [SAR 72:72 DAR 101:150], 90k tbr, 90k tbn, 90k tbc (attached pic)
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
creation_time : 2013-12-01T03:59:56.000000Z
genre : Trailer
artist : Warner Bros.
title : Gravity - 2K Trailer
encoder : HandBrake 0.9.9 2013051800
date : 2013
Duration: 00:02:27.07, start: 0.000000, bitrate: 20296 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 2048x858, 20149 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc (default)
Metadata:
creation_time : 2013-12-01T03:59:56.000000Z
encoder : JVT/AVC Coding
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 153 kb/s (default)
Metadata:
creation_time : 2013-12-01T03:59:56.000000Z
Stream #0:2: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 102x150 [SAR 72:72 DAR 17:25], 90k tbr, 90k tbn, 90k tbc (attached pic)