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  • L’agrémenter visuellement

    10 avril 2011

    MediaSPIP est basé sur un système de thèmes et de squelettes. Les squelettes définissent le placement des informations dans la page, définissant un usage spécifique de la plateforme, et les thèmes l’habillage graphique général.
    Chacun peut proposer un nouveau thème graphique ou un squelette et le mettre à disposition de la communauté.

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

Sur d’autres sites (5083)

  • How do I concat two video mp4 files, each of which has an audio of different sample rates with ffmpeg

    14 août 2020, par Geo

    I have two videos : video1.mp4 and video2.mp4 in the configured txt file, both videos have mp3 audios :
video1.mp4 has : Audio : mp3, 32000 Hz, mono, fltp, 48 kb/s
video2.mp4 has : Audio : mp3, 24000 Hz, mono, fltp, 32 kb/s
I need to keep the different sample rates since I need to change the pitch to make it sound different from the real voice of the person, now I tried to merge the two videos by concatenating them :

    


    ffmpeg -safe 0 -f concat -segment_time_metadata 1 -i videoconf.txt -vf select=concatdec_select -af aselect=concatdec_select,aresample=async=1 -y videoout.mp4

    


    but I got a lot of errors like these :

    


    [aac @ 0x730e491e00] channel element 2.12 is not allocated

    


    index.js:81 Error while decoding stream #0:1 : Invalid data found when processing input

    


    index.js:81 [aac @ 0x730e491e00] TYPE_FIL : Input buffer exhausted before END element found

    


    index.js:81 Error while decoding stream #0:1 : Invalid data found when processing input

    


    ......

    


    So how can I concatenate multiple videos with different audio sample rates inside each video ?
By the way, when the sample rates are the same for all the audios inside each video, the concat works like a charm.

    


    Thanks

    


  • Edited video produces smaller image that original, even with higher resolution

    10 juillet 2020, par ceperman

    I've a .ts format recording from my Humax, which completely fills the window horizontally when played with VLC. In full-screen it fills the screen horizontally in letterbox style, and the same on the TV when played through my PS/3. All good so far.

    


    This is the ffprobe output :

    


    Duration: 02:16:37.72, start: 74238.902878, bitrate: 2554 kb/s
Stream #0:0[0x931]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 704x576 [SAR 16:11 DAR 16:9], max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc


    


    I used ffmpeg to change the audio track :

    


    ffmpeg -i movie.ts -c:v libx264 -c:a ac3 -crf 20 -map 0:v:0 -map 0:a:1 movie.mp4


    


    and produced an .mp4 which also plays correctly.

    


    ffprobe :

    


    Duration: 02:16:37.68, start: 0.005333, bitrate: 1129 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 704x576 [SAR 16:11 DAR 16:9], 932 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)


    


    However, if I edit it using OpenShot, I cannot find any export format that produces an image that fills the window horizontally in the same way, regardless of what resolution or aspect ratio I use.

    


    Example : export format "DV/DVD Widescreen PAL (720x576)" produces this (sample) file :

    


    Duration: 00:00:39.12, start: 0.040000, bitrate: 563 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 720x576, 477 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)


    


    OpenShot appears not to set the AR, so it initially shows in VLC in 5:4 aspect, but even changing the VLC AR to the maximum of 2.39:1 does not stretch it fully from side-to-side.

    


    I've used ffmpeg to experiment with changing the aspect ratio, changing the resolution, and setting the SAR and DAR, all without success.

    


    This can't be a resolution issue, as I've exported 720p and 1080i, plenty of pixels but all produce roughly the same result - a small image that doesn't fill the window, and ditto on the TV. The original recording is only 704x576 but fills the window. Also the aspect ratio of the original recording is 16:9 (VLC agrees) but the actual measured AR of the screen image is closer to 2.04:1.

    


    I'm hoping that while this could be an OpenShot issue, the cause of the problem should be visible to ffprobe and perhaps fixable with ffmpeg. Help wil be appreciated.

    


  • avformat/mxfenc : move content package rates and timebase combinations to a separate...

    28 février 2020, par Marton Balint
    avformat/mxfenc : move content package rates and timebase combinations to a separate struct

    Signed-off-by : Marton Balint <cus@passwd.hu>
    • [DH] libavformat/mxf.c
    • [DH] libavformat/mxf.h

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