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Sur d’autres sites (10854)

  • Merging four videos with different resolution in a Grid with ffmpeg

    5 juillet 2015, par Taufiq

    I want to marge four videos in to one as show below. I have achieve the correct output given all the videos have the same resolution. But I get an undesirable result with different resolution. See below for more details.

    i need ffmpeg code to get to merge 4 videos of different resolution in a grid format

    ffmpeg.exe -i "1.avi" -vf "[in] scale=iw:ih, pad=2*iw:ih [left];movie=2.avi, scale=iw:ih [right]; [left][right] overlay=main_w/2:0 [out]" -b:v 768k "Output1.mp4"
    
ffmpeg.exe -i "3.avi" -vf "[in] scale=iw:ih, pad=2*iw:ih [left];movie=4.avi, scale=iw:ih [right]; [left][right] overlay=main_w/2:0 [out]" -b:v 768k "Output2.mp4"
    
ffmpeg.exe -i "Output1.mp4" -vf "pad=iw:2*ih [top]; movie=Output2.mp4 [bottom]; [top][bottom] overlay=0:main_h/2" "Output_Stacked.mp4"

    Code above gives the follow output.

    For Example

    But the problem arises when I rotate one of the videos and merge them.
    enter image description here.

    Please tell me what I need to change to get the desired result. Thanks
    enter image description here

  • How to downsample all '.MTS' videos in a folder via using FFmpeg/or python ?

    24 mai 2020, par kkkrr000

    I have a list of videos('.MTS') formatt.How can I downsample it (keeping the aspect ratio same).I want to downsample all of them to a particular size.

    



     f"ffmpeg -i {vname} -filter:v scale={width}:{height} -c:


    



    I came across this piece of code. Should I do this via terminal or via a python interpreter ?
Can has experience with this ?

    


  • How to extract video from multiple videos with ffmpeg ?

    6 janvier 2021, par Abbas Perçin

    I want to extract video from multiple videos with ffmpeg. Normally, I could extract the video file from one large video file with the following command.

    


    ffmpeg -ss 648 -t 29 -i /MatrixMovie.ts -f mpegts -pix_fmt yuv422p -c:v libx264 -preset ultrafast -map 0 snapshot.ts


    


    But now I have 10 minutes of parts of this video file (MatrixMovie_part1.ts, MatrixMovie_part2.ts etc) instead of one large file. And the video that I want to extract starts on one of these parts and ends on the other.

    


    My question is How to extract video from multiple videos with ffmpeg ?

    


    I've been dealing with ffmpeq for days but couldn't manage it. I would appreciate it if you could help. Thank you.

    


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