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Autres articles (24)
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Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
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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 (...) -
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 (...)
Sur d’autres sites (5496)
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Improve ffmpeg performance
8 décembre 2014, par hiteshI am using
ffmpeg
to take screen shot from video , it is video from CDN.I am doing below steps
1.Upload video to CDN using html file tag.
2.Get CDN url and use it for creating screen shot using
ffmpeg
.3.Upload the screenshot in CDN.
4.Save video and screenshot CDN url to DB
the whole process is really time consuming, even if I put loader it is really slow.
This is code of POC I did for ffmpeg :
$imageFile = realpath("./videos") . '/test5.png';
$imageFile2 = realpath("./videos") . '/test6.png';
$size = "230x155";
$getfromsecond = 8;
if (isEnabled('shell_exec')) {
echo "Shall_exec is enabled " . "<br />";
shell_exec('echo "hello world"');
echo "<br />";
} else {
echo "shall exec command is not allowed";
}
$cmd = "ffmpeg -i $vid -an -ss $getfromsecond -s $size -vframes 1 $imageFile";
$cmd2 = "ffmpeg -i $remoteVideo -an -ss $getfromsecond -s $size -vframes 1 $imageFile2";
echo 'command 1 - local Image : ' . $cmd . "<br />";
echo 'command 2 - remote video : ' . $cmd2 . "<br />";
echo "<br />command 2 - remote video shell_exec output : " . shell_exec($cmd) . "<br />";
echo '<br />command 2 - remote video shell_exec output : ' . shell_exec($cmd2) . "<br />";
if (!shell_exec($cmd)) {
echo " video Thumbnail created" . "<br />";
} else {
echo "Error Creating video thumbnail" . "<br />";
}
if (!shell_exec($cmd2)) {
echo "Remote video Thumbnail created" . "<br />";
} else {
echo "Error Creating Remote video thumbnail" . "<br />";
}
function isEnabled($func) {
return is_callable($func) && false === stripos(ini_get('disable_functions'), $func);
}Is there some way to improve ffmpeg performance ?
Thanks
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ffmpeg DPX to QT batch with multiple subfolders
15 juin 2018, par Cris DufyI am looking to batch render multiple DPX sequences to QT without having to repeatedly change the input output coding.
This is what I would like to do for multiple shots :
ffmpeg -y -framerate 24 -f image2 -start_number 1001 -timecode
01:00:00:00 -i inputfolder1/inputsubfolder1/shot1_%06d.dpx -vcodec h264 /output/shot1.movI want the shot name to remain the same as input.
Is this a possibility ?
Thanks a lot,
Chris
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Improved thumbnail extraction from videos
21 janvier 2014, par Tommy NgI have been using FFmpeg to find the middle frame of a h264 video file, and extract the jpg thumbnail for use on a streaming portal. This is done automatically for each uploaded video.
Sometimes the frame happens to be a black frame or just semantically bad i.e. a background or blurry shot which doesn't relate well to the video content.
I wonder if I can use openCV or some other method/library to programmatically find better thumbnails through facial recognition or frame analysis.