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    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
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  • 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.
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Sur d’autres sites (9909)

  • Error launching ffmpeg in Windows service for screen recording using GDI capture and issue when screen is locked

    21 mai 2023, par Артем Артемыч

    I have a Go application that works as Windows service. It launches ffmpeg to record the screen using the Win32 GDI-based screen capture device. However, when the service runs under the SYSTEM account, ffmpeg fails to start, and I receive the following error :

    


    [gdigrab @ 000001ff2a1ea200] Capturing whole desktop as 1024x768x32 at (0,0)
[gdigrab @ 000001ff2a1ea200] Failed to capture image (error 5)
[gdigrab @ 000001ff2a1ea200] Could not find codec parameters for stream 0 (Video: bmp, none, 125831 kb/s): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, gdigrab, from 'desktop':
  Duration: N/A, bitrate: 125831 kb/s
  Stream #0:0: Video: bmp, none, 125831 kb/s, 5 fps, 1000k tbr, 1000k tbn
Output #0, mpegts, to 'pipe:1':
Output file #0 does not contain any stream



    


    However, if I run ffmpeg using the token of the current user, like this :

    


    token, _ := wintoken.GetInteractiveToken(wintoken.TokenLinked) // using the "github.com/fourcorelabs/wintoken" library
a.cmd = exec.Command("ffmpeg", params...)
a.cmd.SysProcAttr = &syscall.SysProcAttr{
    Token:         syscall.Token(token.Token()),
    CreationFlags: 0x08000000,
    HideWindow:    true,
}


    


    the screen recording works. But as soon as the UAC prompt appears or the screen is locked (win+L), the recording stops with the following error :

    


    [gdigrab @ 00000258d9efa540] Failed to capture image (error 5)
Error demuxing input file 0: I/O error
desktop: I/O error


    


    I have tried running ffmpeg with psexec :

    


    timeout 10 /NOBREAK && psexec -i -h -d -s ffmpeg -f gdigrab -framerate 5 -i desktop -c:v libx264 -preset veryfast -bf 2 -g 150 out.mp4



    


    If recording starts while the screen is locked, everything works fine, i.e. ffmpeg records the locked screen. However, I haven't been able to reproduce this behavior when launching from Go. Is it possible to achieve continuous screen recording without stopped when the UAC prompt appears or the screen is locked ?
Or maybe there are other approaches in which I can solve my problem

    


  • Wanted to download FFMPEG source code for c# [on hold]

    24 février 2017, par Nimesh khatri

    I am working on ffmpeg video recording project, and i’m looking for complete source code of ffmpeg for core analysis..
    Can anybody help from where to download the same ?

  • Documentation + download history updates

    20 décembre 2011, par Scott Schiller

    m doc/download/index.html m doc/index.html Documentation + download history updates

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