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Autres articles (60)
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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. -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (5401)
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Rendering list of images over a video with ffmpeg does not work if video has audio
12 mai 2023, par Alex StirkenI'm using FFmpegKit for Flutter to render a list of changing images onto a video.
Im using the following arguments :


final arguments = [
 '-y',
 '-i', inputVideoPath,
 '-framerate', '$fps',
 '-start_number', '100',
 '-i', '${tempDirectoryPath}/%3d.png',
 '-filter_complex', '[1:v]scale=720:1280 [ovrl]; [0:v][ovrl]overlay=0:0,format=yuv420p[v]',
 '-map', '[v]',
 '-c:v', 'libx264',
 "-preset", "medium",
 '-pix_fmt', 'yuv420p',
 '-shortest',
 '$outputFilePath'
];



It works like a charm as long as the video file (.mp4) has no audio stream. If the video has an audio stream, only the first image is getting rendered (overlayed) over the video.


Any suggestions ?


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Best video format for video processing and converting to mp4
29 août 2014, par Max GrigorievI may have video in selected format and I should make some video changes - add logo to the whole video as example and then convert to mp4. Right now original file is in h.264/mp4 format too. As I understand to add logo original file should be decoded to frames then logo should be added and then frames should be encoded to H.264 and packed to mp4. Since I’m newbie in video processing maybe there’s a raw video format which removes decoding stage and it saves time and cpu ?
Thanks
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how to improve the quality of resultant video when merging audio-video with ffmpeg ?
6 novembre 2015, par R.SWhen merging an audio and video with ffmpeg, the quality of the resultant video goes down. How to we improve the quality(esp. the audio quality) ?
The audio quality gets degraded to quite an extent with random screeches in between.
I’ve tried converting the audio to mp3 and video to mp4 before merging them, tried various audio-video parameters like bitrate, sample-rate, qscale etc but still unsuccessful.
Any help would be greatly appreciated !