Recherche avancée

Médias (1)

Mot : - Tags -/ticket

Autres articles (29)

  • Soumettre améliorations et plugins supplémentaires

    10 avril 2011

    Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
    Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)

  • D’autres logiciels intéressants

    12 avril 2011, par

    On ne revendique pas d’être les seuls à faire ce que l’on fait ... et on ne revendique surtout pas d’être les meilleurs non plus ... Ce que l’on fait, on essaie juste de le faire bien, et de mieux en mieux...
    La liste suivante correspond à des logiciels qui tendent peu ou prou à faire comme MediaSPIP ou que MediaSPIP tente peu ou prou à faire pareil, peu importe ...
    On ne les connais pas, on ne les a pas essayé, mais vous pouvez peut être y jeter un coup d’oeil.
    Videopress
    Site Internet : (...)

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

Sur d’autres sites (6077)

  • x264/x265 options for fast decoding while preserving quality

    18 août 2024, par user3301993

    I want to encode some videos in H264 and H265, and I would like to ask for help in order to chose the adequate options in x264/x265.

    


      

    • My first priority is video quality. Lossless would be the best quality for example

      • 


    • My second priority is fast decoding speed (ie : I would like faster decoding without sacrificing quality)

        

      • fast decoding for me means that the decoding machine would use less CPU resources reading the resulting video

        • 


      • Less RAM consumption would be a plus

        • 


      • Latency is not important

        • 


      


      • 


    • I don't care that much if the output file ends up bigger. Also, encoding speed is not important

      • 


    


    I'm aware of the option -tune fastdecode in both x264 and x265. But apparently the quality gets a bit worse using it.

    


    For x264 :

    


    -tune fastdecode is equivalent to --no-cabac --no-deblock --no-weightb --weightp 0 (My source is x264 --fullhelp)

    


    Which options preserve quality ?

    


    For x265 :

    


    -tune fastdecode is equivalent to --no-deblock --no-sao --no-weightp --no-weightb --no-b-intra (according to x265 doc)

    


    Again, which options preserve quality ?

    


    I tried to read some documentation on these options, but I'm afraid I'm too stupid to understand if they preserve quality or not.

    


    To explain further what I mean by "preserving quality" :

    


    


    I don't understand what the cabac option does exactly. But let's say for example that it adds some extra lossless compression, resulting in a smaller video file, but the decoding machine would need to do extra work to decompress the file

    


    In that case, the --no-cabac option would skip that extra compression, resulting in no loss of quality, with a bigger file size, and the decoding machine would not need to decompress the extra compression, saving CPU work on the decoding side

    


    In this scenario, I would like to add the --no-cabac option, as it speeds up decoding, while preserving quality.

    


    


    I hope I could get my point across

    


    Can anyone help me pick the right options ?

    


    Thanks in advance

    


  • x264/x265 options for fast decoding while preserving quality

    18 août 2024, par user3301993

    I want to encode some videos in H264 and H265, and I would like to ask for help in order to chose the adequate options in x264/x265.

    


      

    • My first priority is video quality. Lossless would be the best quality for example

      • 


    • My second priority is fast decoding speed (ie : I would like faster decoding without sacrificing quality)

        

      • fast decoding for me means that the decoding machine would use less CPU resources reading the resulting video

        • 


      • Less RAM consumption would be a plus

        • 


      • Latency is not important

        • 


      


      • 


    • I don't care that much if the output file ends up bigger. Also, encoding speed is not important

      • 


    


    I'm aware of the option -tune fastdecode in both x264 and x265. But apparently the quality gets a bit worse using it.

    


    For x264 :

    


    -tune fastdecode is equivalent to --no-cabac --no-deblock --no-weightb --weightp 0 (My source is x264 --fullhelp)

    


    Which options preserve quality ?

    


    For x265 :

    


    -tune fastdecode is equivalent to --no-deblock --no-sao --no-weightp --no-weightb --no-b-intra (according to x265 doc)

    


    Again, which options preserve quality ?

    


    I tried to read some documentation on these options, but I'm afraid I'm too stupid to understand if they preserve quality or not.

    


    To explain further what I mean by "preserving quality" :

    


    


    I don't understand what the cabac option does exactly. But let's say for example that it adds some extra lossless compression, resulting in a smaller video file, but the decoding machine would need to do extra work to decompress the file

    


    In that case, the --no-cabac option would skip that extra compression, resulting in no loss of quality, with a bigger file size, and the decoding machine would not need to decompress the extra compression, saving CPU work on the decoding side

    


    In this scenario, I would like to add the --no-cabac option, as it speeds up decoding, while preserving quality.

    


    


    I hope I could get my point across

    


    Can anyone help me pick the right options ?

    


    Thanks in advance

    


  • can i use ffmpeg to stream my desktop with an end to end latency below 80ms for a resolution of 1920x1080@30fps ?

    12 juin 2014, par user2132270

    ffmpeg using direct show capture filter has an end to end latency of 200-350ms for 30fps using ultrafast and 8 threads.
    End to end is from Source machine to target Raspberry Pi running hardware optimized omx-player.

Navigation