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Médias (91)

Autres articles (59)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP 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 de tous types de médias

    10 avril 2011

    Contrairement 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) (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP 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 (8197)

  • Add sound effects at particular time in a Video file

    13 janvier 2017, par G Singh

    I have a video file and I need to add multiple audio effects to it at particular time.

    How can this be achieved ?

    Using FFMPEG only audio can be merged with video file but how to add a small audio effect at particular time.

    I tried the following way,

    ffmpeg.exe -i video.mp4 -i audio.mp3 -map 0:v -map 1:a -c copy -y output.mp4

    Is there any other open source or paid library to do this task ?

    Any kind of guidance will be appreciated.

    Thanks.

  • Cut the stream at specific clock time in FFMPEG

    14 juin 2017, par Fearhunter

    I use the following command from ffmpeg to cut my live stream from VLC :

    ffmpeg -i InputStreamURL -acodec aac -strict -2 -vcodec libx264 -hls_wrap 100 -f hls -hls_time 20 /var/www/html/ts/1.m3u8

    Now I want to cut the stream at a specific time like for example 09:00 am till 12:00 PM. I was reading about the segment muxer in the FFMPEG documentation. I read the following command :

    segment_atclocktime 1|0
    If set to "1" split at regular clock time intervals starting from 00:00 o’clock. The time value specified in segment_time is used for setting the length of the splitting interval.
    For example with segment_time set to "900" this makes it possible to create files at 12:00 o’clock, 12:15, 12:30, etc.

    Default value is "0".

    Is there a other command to specify a timestamp to record the stream ? This is my my interface I am gonna build :

    Live

    The scenario is :

    1 : enter stream URL
    2 : begin time = 15:00 pm
    3 : end time = 17:00 pm
    4 : pieces = 3

    Conclusion :

    15:00 - 17:00 = 2 hours
    2 hours * 3600 = 7200 seconds
    7200 / 3 = 2400 seconds for each sliced video

    How can I use segment_atclocktime for this scenario ?

  • FFMPEG API real-time encoding, skipped frames

    24 octobre 2015, par Paul Knopf

    I am using FFMPEG to encode live video. If I can’t keep up with the live encoding, I need to drop frames. Currently, I just skip the encoding of a raw frame, and the PTS for the next frame is the same. Meaning, even if there is a skipped frame, the pts is always 1,2,3,4,5,6....

    This causes the playback of the file to skip ahead in time. Instead, I would like to add blank frames to the muxed file. I tried making PTS indicate a skipped frame by setting it to 1,2,4,5,8,...., but the FFMPEG h264 encoders depend on PTS being consecutive.

    How do I pass empty data to my mp4/container, indicating a blank space in time, so that decoders won’t appear to jump ahead in time, but instead just see a delay/freeze.

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