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    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

Sur d’autres sites (8282)

  • FFmpeg : With 1 720p and 1 1080p video, how can I upscale the 1st one to 1080p and hstack them in one command ?

    4 juillet 2021, par YousufSSyed

    This is the command I have right now, but it only works for videos with the same height :

    


    ffmpeg -i "video 1.mp4" -i "video 2.mp4" -c:a copy c:v h264_amf -filter_complex "hstack,format=yuv420p" "Output video.mp4" 


    


      

    • video 1.mp4 is the 720p one

      • 


    • video 2.mp4 is the 1080p one

      • 


    


    I need to keep the audio for the 1st video but not the 2nd one, the 2nd one doesn't have audio. I tried adding [0:v]scale=-1:1080; before hstack but that doesn't work.

    


  • Can I make this FFMPEG animation smoother ?

    21 mai 2021, par mrmaker12345

    I have a basic ffmpeg command which zooms an images from 150% to 100% and overlays onto a stretched and blurred version of itself. All works great, except the zoom effect is very shaky. Is there any way to make this animation smoother ?

    


    ffmpeg -y -loop 1 -i image.jpg -filter_complex "[0:v]scale=1920:1080,boxblur=10:10,setsar=1[bg];[0:v]scale=-1:(ih*1.5)-(ih*1.5)*n/900:eval=frame[fg];[bg][fg]overlay=x=(W-w)/2:y=(H-h)/2[out]" -map "[out]" -t 10 -r 60 "out.mp4"


    


  • C++ : Combine 4 YV12 images to a single image (4 quadrants). FFMPEG ?

    1er juin 2016, par Paul Knopf

    I have 4 YV12 buffers that I need to combine to a single buffer (4 quadrants).

    I could manually write a bunch of memcpy stuff with offsets, but I fear performance issues.

    Is there an FFMPEG method that I can use to achieve this ?

    AVFrame* topLeft = ...
    
AVFrame* topRight = ...
    
AVFrame* bottomLeft = ...
    
AVFrame* bottomRight = ...
    
AVFrame* destination = ... // topLeft-size + topRight->size + bottomLeft->size + bottomRight ->size

    Maybe there is a method with a similar signature here ?

    void blend_image(AVFrame* src, AVFrame dest, int x, int y);

    Then...

    blend_image(topLeft, destination, 0, 0);
    
blend_image(topRight, destination, 1920, 0);
    
blend_image(bottomLeft, destination, 0, 1080);
    
blend_image(bottomRight, destination, 1920, 1080);

    Any guidance would be greatly appreciated.

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