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Autres articles (34)
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Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...) -
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 (...)
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Get x264 options from stream
29 juillet 2014, par HardRockI have a problem with H264 encoding, actually with libx264 :(
I want to encode series of images from web camera into h264 and send stream to chines DVR. Problem is DVR can’t decode my stream. I tried to adjust (using h264stream_analyzer) SPS and PPS in libx264 to match SPS and PPS headers from "correct stream", produced by other chinese DVR’s and IP cameras. But no luck :( Looks like problem in bitstream.
My stream and "correct" stream - are both may be converted and played with avconv (ffmpeg), for example.
Transport is ok. If i send "correct stream" - DVR understand it. Problem in stream.One strange thing - "correct stream" contains a lot of 28 and 29 slice types. From h264 specification this is must be "fragmentation" units. But my stream contains only P and I slices, но fragmens.
So how i can get exact stream encoding parameters from existing sample stream ? It may be difference in x264 versions ?
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No bluetooth audio input with ffmpeg on macOS
4 août 2020, par Nicholas YangI'm trying to screen record using ffmpeg 4.3.1 on macOS Catalina. I'm using the following command :


ffmpeg -f avfoundation -i "1:0" -r 24 -t 30 out.mkv



With the following devices :


AVFoundation video devices:
[0] FaceTime HD Camera (Built-in)
[1] Capture screen 0
AVFoundation audio devices:
[0] Bose QuietComfort 35 Series II
[1] ZoomAudioDevice
[2] Built-in Microphone



What's interesting is that audio input works fine with the built in microphone (albeit weirdly choppy), but it doesn't seem to work with the Bose headphones. Is there a particular reason why ? And is there a potential workaround ?


Thanks,
Nicholas


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Reading custom SEI message when decoding using VideoCodec (NVENC)
23 avril 2018, par cloudravenI have a series of videos with custom information encoded in the sei message NAL. Is it possible to read that information when decoding using the Nvidia hardware decoder. If it is not supported, should I use FFMPEG compiled with NVENC support instead ?
UPDATE :
I want to decode the media and read the SEI message. I am streaming live video and including postprocessing info in the sei message. The client has to use that info to apply effects to the decoded media.
Decoding the media as quickly as possible is important, and I want to do it in hardware. I assume that the Nvidia decoder must parse the NAL units to decode them. I would like to avoid duplicating work if possible.