Recherche avancée

Médias (1)

Mot : - Tags -/biomaping

Autres articles (105)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP 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 (...)

Sur d’autres sites (9643)

  • what is the best way to IPC with FFMPEG On windows

    17 octobre 2018, par Evren Bingøl

    I have a client and a server code. I create ffmpeg process on
    both ends and use pipes to communicate with ffmpeg. I passed an RGB data and read HVec out , send that the client and do the opposite. basically I’m streaming HVec, The problem I have with the pipes is The buffer size are too small so I have to do a bunch of file read operations from the pipe . and it’s really slows me down. for example if I have to read 100 bytes , function reads 20 bytes. so I have to loop five times to read hundred bytes . of course these numbers are made up . actual data size I try to Read is 1080*1920*4=829400
    1 is writing to a socket and communicating via sockets a better choice.
    2 would name pipes work better ?

    I know third option is to use avcodec lib but I’m trying not to do that

  • Use FFMPEG to export audios with gaps filled

    17 octobre 2018, par jcea

    I have a MKV file with gaps in the audio. That is, there are gaps in the MKV audio track timestamps. According to "ffmpeg", the AC3 audio length is 802 seconds, but when exporting the audio to WAV, the resulting file length is 801’53 seconds. That is, the "exported" audio is shorter.

    Triaging the issue with

    ffmpeg -i INPUT.mkv -af ashowinfo -map 0:2 -y -frames:a XXXX -f alaw /dev/null

    I can confirm that the length difference is consistent with gaps in the timestamps of the original audio frames. There are a handful of missing audio frames. I guess those are replaced by silence in the player.

    The command I use to export the audio is :

    ffmpeg -i INPUT.mkv -map 0:1 -ac 2 OUTPUT.wav

    My question is : How can I instruct FFMPEG to preserve the gaps in the original audio, zero (silence) filled ?. The WAV file duration should be the same than the original AC3 audio.

    Given my current workflow, I would rather prefer to not keep the original timestamps in the output file but generate a WAV with (tiny) silences instead. I could consider keeping timestamps if there is no other choice, but this could be quite a pain in my workflow.

    Advice ? Help ?

    Thanks a lot in advance !

  • vaapi_encode_h265 : Set level based on stream if not set by user

    19 septembre 2018, par Mark Thompson
    vaapi_encode_h265 : Set level based on stream if not set by user

    Sets the level based on the stream properties if it is not explicitly
    
set by the user.  Also add a tier option to set general_tier_flag, since
    
that affects the level choice.
    • [DH] doc/encoders.texi
    • [DH] libavcodec/Makefile
    • [DH] libavcodec/vaapi_encode_h265.c

Navigation