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Autres articles (6)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Que fait exactement ce script ?

    18 janvier 2011, par

    Ce script est écrit en bash. Il est donc facilement utilisable sur n’importe quel serveur.
    Il n’est compatible qu’avec une liste de distributions précises (voir Liste des distributions compatibles).
    Installation de dépendances de MediaSPIP
    Son rôle principal est d’installer l’ensemble des dépendances logicielles nécessaires coté serveur à savoir :
    Les outils de base pour pouvoir installer le reste des dépendances Les outils de développements : build-essential (via APT depuis les dépôts officiels) ; (...)

Sur d’autres sites (3064)

  • How to switch from yuyv422 to yuv420p for better framerate in ffmpeg on Windows 10

    14 mai 2019, par someone from belgium is called

    I upgraded PC from Windows 7 to Windows 10, as it is discontinued. Problem is,
    I had low latency monitoring and recording solution with FFmpeg.

    After the upgrade, Logitech camera switched from yuv420p to yuyv422 and I lost 30 fps support at 1280x720. Now it is only limited to 10 FPS.

    Tried different drivers, it still yuyv422

    Here is a code i use.

    ffmpeg -y -loglevel panic -hwaccel qsv -threads 1 -fflags nobuffer -flags low_delay -strict experimental -f dshow -video_size 1280x720 -framerate 10 -pixel_format yuyv422 -i video="C922 Pro Stream Webcam" -codec:v libx264 -preset ultrafast -crf 24 -tune zerolatency -map 0 -f segment -segment_time 600 -segment_wrap 2 -reset_timestamps 1 dvr_%%04d.avi -codec:v copy -f nut - | ffplay -fflags nobuffer -flags low_delay -vf scale=1920x1080:flags=lanczos -window_title "kamera" -noborder -left 1920 -top 150 -fast -framedrop -

    I really need low CPU, no latency monitoring at minimum 24 FPS and recording capabilities. File size doesn’t matter so much.

    Using mjpeg eats CPU like crazy.

  • FFmpeg script for linux and windows batch video encode different settings depending on video resolution [closed]

    28 décembre 2022, par Jaroslav Havel

    I'm looking for advice, help. I would like to convert all home videos to H265 using ffmpeg. Videos are in different formats and resolutions (3GP, mov, avi, mpg, mp4). I have an idea of which setting to set for which resolution, but I don't know how to write it all into a script (windows and linux). For these resolutions

    


    CRF 18-22 for <= 576p use 20
CRF 19-23 for > 576 and <= 720p use 21
CRF 20-24 for >720 and <= 1080p use 22
CRF 22-28 for >= 2160p 4K use 25


    


    For windows i have

    


    @ECHO OFF

FOR %%F IN ("*.*") DO (
     ffmpeg -i %%F -c:v libx265 -crf 20 -preset faster -profile:v main -pix_fmt yuv420p -acodec libmp3lame -b:a 192k %%~nF_new.mkv
)


    


    Big thanks for the help

    


  • How to Pause and Resume Screen Recording in FFmpeg on Windows ?

    24 mars, par Iman Sajadpur

    I use FFmpeg on Windows to record my screen. I want to pause and resume the recording properly.
I know that pressing Ctrl + S, Pause key on the Keyboard, or suspending FFmpeg via Resource Monitor stops the process, but screen recording conntinues in the background.
Here is an example of the command I use for screen recording :

    


    ffmpeg -f gdigrab -probesize 100M -i desktop -f dshow -channel_layout stereo -i audio="Microphone (2- High Definition Audio Device)" output.mp4

    


    How can I pause recording completely so that no frames are captured during the pause and resume it seamlessly ?

    


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