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  • 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 (...)

  • 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 (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (8956)

  • FFMPEG - the video is out of sync with the audio

    5 août 2020, par mitsuki

    I tried to covert ISO file to m3u8, but the video is out of sync with the audio.

    


    I guess this is one of the reason.
First VOB file has only audio.
From second VOB file, there are audio and video.
When I play the m3u8, audio from first VOB and video from second VOB will start.
That's why probably the video is out of sync with audio.

    


    How do I skip First VOB file which has only audio.

    


    By the way, I am using this script.
I am looking forward to your advice.

    


    docker run —rm -it
    
-v $(pwd)/input :/config
    
jrottenberg/ffmpeg
    
-hide_banner
    
-y -i /config/input545.iso
    
-vf scale=w=640:h=360:force_original_aspect_ratio=decrease
    
-c:a aac
    
-ar 48000
    
-c:v h264
    
-profile:v main
    
-crf 20
    
-sc_threshold 0
    
-g 48 -keyint_min 48
    
-hls_time 6
    
-hls_playlist_type vod
    
-b:v 800k
    
-maxrate 856k
    
-bufsize 1200k
    
-b:a 96k
    
-max_muxing_queue_size 5000
    
-analyzeduration 60M
    
-probesize 60M
    
-max_interleave_delta 0
    
-hls_segment_filename /config/360p_%03d.ts /config/360p.m3u8

    


    Thank you.

    


  • How to encode bmp images to H264, H265 losslessly with and without Nvenc

    26 août 2020, par Hamza Ghizaoui

    So, let s assume that i have 5000 BMP images (1920x1080) that i want to encode into a video.

    


    I managed to do that losslessly using FFMPEG using the following 4 encoders :

    


      

    • libx264

      • 


    • libx265

      • 


    • h264_nvenc

      • 


    • hevc_nvenc

      • 


    


    The problem is that when i try to test my results using PSNR, i get extremly high values, in the 30-70 range. What is happening ?
Is the problem with color space conversion ? (None of the encoders above seem to support RGB, a conversion to YUV occur and I m assuming that a lot of averaging is happening. stuff that PSNR test is very sensetive toward).

    


    If my reasoning is correct, is it possible to encode BMP 100% losslessly. the resuling video will be streamed locally. the network is 10 GBS, so the size isn t that important.

    


    thank you

    


  • FFMPEG - Delete unused files or streaming without saving files

    8 septembre 2020, par M.Demiral

    I need to get live video from a device. I have to play the video on the browser. live video can be received as RTP or UDP.

    


    Since there is no support for VLC, I published the video by getting it via RTP with FFMPEG and creating a web server with Nginx. But later I realized that it is recording video tracks to disk. This is a situation I don't want.

    


    I can show it in web browser using HLS.js. It is saving to HDD when I use the following command.

    


    ffmpeg -i udp://127.0.0.1:5000 -vcodec libx264 -vprofile baseline -acodec aac -strict -2 -max_muxing_queue_size 1024 -f flv rtmp://127.0.0.1/show/stream


    


    I don't want it to save to HDD.

    


    When the codec I understand is changed, it saves the video to HDD.
I think I prevented it from recording like this. But I don't know how to play from the web browser.

    


    ffmpeg -i udp://127.0.0.1:5000 -strict -2 -max_muxing_queue_size 1024 -f flv rtmp://127.0.0.1/show/stream


    


    Is there any way to delete unused files or stream without saving to disk ?

    


    P.S.

    


    First question as it may be needed : How to play a live video in the browser ?

    


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