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Autres articles (98)
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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.
You may also (...) -
Librairies et logiciels spécifiques aux médias
10 décembre 2010, parPour un fonctionnement correct et optimal, plusieurs choses sont à prendre en considération.
Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel ; FFMpeg avec le maximum de décodeurs et (...) -
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 (...)
Sur d’autres sites (10540)
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Is it possible to encode one yuv file to 3 h.264 files with different bitrates with one command ?
24 juillet 2012, par Richard KnopI have a YUV file. I need to encode it to H.264 but using three different bitrates. Is it possible to do it with one command so the yuv file does not need to be processed muttiple times ?
Here's what I do right now :
x264 -B 600 -o /path/to/output_first.264 /path/to/input.yuv
x264 -B 800 -o /path/to/output_second.264 /path/to/input.yuv
x264 -B 1000 -o /path/to/output_second.264 /path/to/input.yuvIs it possible to do it in one command to make it faster ? YUV file can be quite big so I don't want to extract it three times in a row. And all three encoding processes use the same input YUV file so I guess it should be possible.
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ffmpeg bit rate
13 juillet 2012, par user1522872I am transcoding a video using FFMPEG API in c code.
I am trying to set the video bit rate using the ffmpeg API as shown below :ovCodecCtx->bit_rate = 100 * 1000;
The Encoder I am using is libx264.
But this parameter is not taken into effect and the resulting video quality is very bad.
I have even tried setting related parameters like rc_min_rate, rc_max_rate, etc.. but the video quality is still very low as these related parameters are not taken into effect.Could any expert tell how one can set the bit rate correctly using the FFMPEG API ?
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Conversion Funnel Optimisation : 10 Ways to Convert More
24 janvier 2024, par Erin