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Médias (1)
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The Great Big Beautiful Tomorrow
28 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Texte
Autres articles (47)
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Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
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Configurer la prise en compte des langues
15 novembre 2010, parAccéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...) -
Contribute to translation
13 avril 2011You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
MediaSPIP is currently available in French and English (...)
Sur d’autres sites (4123)
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mxfdec : Set DTS and PTS on video packets
9 décembre 2011, par Tomas Härdinmxfdec : Set DTS and PTS on video packets
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iPad Doesn't Render H.264 Video with HTML5
5 octobre 2011, par jgoldbergI have some H.264-encoded videos which render in HTML5 correctly in the web browser, but do not render correctly on the iPad. When I use a H.264 video I downloaded off the internet, my video renders correctly on the iPad, so it is not an HTML problem.
Here is the ffmpeg info about my videos —
My original .mov video :
Seems stream 1 codec frame rate differs from container frame rate : 6000.00 (6000/1) -> 30.00 (30/1)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a_video.mp4' :
Metadata :
major_brand : qt
minor_version : 537199360
compatible_brands: qtDuration : 00:00:42.74, start : 0.000000, bitrate : 220 kb/s
Stream #0.0(eng): Audio: aac, 44100 Hz, stereo, s16, 94 kb/s
Stream #0.1(eng): Video: h264, yuv420p, 762x464, 122 kb/s, 30 fps, 30 tbr, 3k tbn, 6k tbcAfter using Handbrake to convert my .mov to a mp4, yet doesn't render on the iPad :
Seems stream 0 codec frame rate differs from container frame rate : 180000.00 (180000/1) -> 29.97 (30000/1001)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a_video.m4v' :
Metadata :
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
encoder: HandBrake 0.9.5 2011010300Duration : 00:00:42.77, start : 0.000000, bitrate : 169 kb/s
Stream #0.0(und) : Video : h264, yuv420p, 752x464 [PAR 381:376 DAR 381:232], 35 kb/s, PAR 145161:141376 DAR 145161:87232, 29.97 fps, 29.97 tbr, 90k tbn, 180k tbc
Stream #0.1(eng) : Audio : aac, 44100 Hz, stereo, s16, 128 kb/sHere is a .mp4 I found online which does render on the iPad :
Seems stream 1 codec frame rate differs from container frame rate : 180000.00 (180000/1) -> 25.00 (25/1)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a_video_3_emu.mp4' :
Metadata :
major_brand : M4VP
minor_version : 1
compatible_brands : M4VPM4A mp42isom
encoder : CoreMediaAuthoring 677, CoreMedia 420.17, i386Duration : 00:01:38.01, start : 0.000000, bitrate : 1023 kb/s
Stream #0.0(und) : Audio : aac, 32000 Hz, mono, s16, 97 kb/s
Stream #0.1(und) : Video : h264, yuv420p, 480x360 [PAR 1:1 DAR 4:3], 914 kb/s, 25 fps, 25 tbr, 90k tbn, 180k tbcDoes anyone see something wrong with the way I am encoded my videos ?
Edit
At first my theory was that the iPad was sensitive to different container formats ; but that appears not to be the case. I took a video which does render correctly on the iPad and converted it to a .mov, and it still played correctly on the iPad. So there must be a problem with how the iPad deals with the underlying H.264 stream.
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What is Video Lagrange factor and how to achieve Constant bit rate ?
12 décembre 2011, par TarunI want to perform transcoding using FFMPEG. My target is to acheive CBR i.e Constant bit rate. But even using option like -maxrate and -minrate I am unable to acheive it.
I know when converting to x264 if I choose CBR, it will deteriorate the video quality but I am OK with it since I want to use it for streaming.Please help me asap