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Médias (1)
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DJ Dolores - Oslodum 2004 (includes (cc) sample of “Oslodum” by Gilberto Gil)
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (102)
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Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Que fait exactement ce script ?
18 janvier 2011, parCe script est écrit en bash. Il est donc facilement utilisable sur n’importe quel serveur.
Il n’est compatible qu’avec une liste de distributions précises (voir Liste des distributions compatibles).
Installation de dépendances de MediaSPIP
Son rôle principal est d’installer l’ensemble des dépendances logicielles nécessaires coté serveur à savoir :
Les outils de base pour pouvoir installer le reste des dépendances Les outils de développements : build-essential (via APT depuis les dépôts officiels) ; (...)
Sur d’autres sites (7687)
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webm dash encoding... What are the correct ffmpeg parameters ?
24 avril 2020, par DeanI'm stumped with encoding videos into a dash compliant format. I'm going from .mp4 to .webm



Firstly, I am running OS X and ffmpeg 2.5.4.



Here's the encoding commands I am using in my test (I got these from here) :



ffmpeg -i IMG_0113.mp4 -c:v libvpx-vp9 -s 160x90 -b:v 25k -g 1 -tile-columns 4 -frame-parallel 1 -an -f webm -dash 1 video_160x90_25k.webm

ffmpeg -i IMG_0113.mp4 -c:v libvpx-vp9 -s 160x90 -b:v 50k -g 1 -tile-columns 4 -frame-parallel 1 -an -f webm -dash 1 video_160x90_50k.webm

ffmpeg -i IMG_0113.mp4 -vn -acodec libvorbis -ab 128k -dash 1 audio_128k.webm

ffmpeg -f webm_dash_manifest -i video_160x90_25k.webm -f webm_dash_manifest -i video_160x90_50k.webm -f webm_dash_manifest -i audio_128k.webm -c copy -map 0 -map 1 -map 2 -f webm_dash_manifest -adaptation_sets "id=0,streams=0,1 id=1,streams=2" manifest.mpd




Secondly, the problem is not with my server, as I have downloaded the samples from here, and they work 100% on the dash.js player when served from my local server.



Please could someone out there point me in the right direction ? Or provide a sample of the ffmpeg commands used to get the output format correct.



Thanks,
Dean.


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FFMPEG WAV file not spitting out correct audio length
7 juin 2018, par Alexander LeonI am piping the audio out with the ’attachment’ header so that the result is immediately downloaded. With other formats, such as mp3, the duration on the downloaded file metadata is set correctly. With WAV tho, the duration reads 00:00, which makes it basically unusable by audio players like iTunes. Any help ?
app.get('/', (req, res) => {
res.contentType('audio/wav');
res.attachment('somefile.wav');
var pathToAudio = 'https://dl.dropbox.com/s/pc7qp4wrf46t9op/test-clip.webm?dl=0';
ffmpeg(pathToAudio)
// .output(stream, {end: true})
.toFormat('wav')
// setup event handlers
.on('error', function(err) {
console.log('an error happened: ' + err.message);
})
.pipe(res {end: true})
}); -
Get correct framerate from ffmpeg
8 mai 2018, par JaSHinGood day,
I have a problem. I need to get correct framerate from ffmpeg libs..
I tried to use
pFormatCtx->streams[videoStream]->avg_frame_rate.num
return of avg_frame_rate is 2997. But when I dumped meta info, I got :
Input #0, avi, from '/test.avi':
Metadata:
encoder : MEncoder SVN-r33883(20110719-gcc4.5.2)
Duration: 00:49:47.70, start: 0.000000, bitrate: 1294 kb/s
Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 856x480 [SAR 1:1 DAR 107:60], 1090 kb/s, SAR 491520:492521 DAR 8192:4603, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 192 kb/s
2015-09-20 15:47:02.377 TV3[21607:769601] ready to start audiosample rate is : 23.98fps. What value is correct and why are they different ?