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  • ffmpeg Merge audio into mp4 video

    21 juillet 2022, par LQH Gaming

    For example :
I have an audio file 5 minutes long
And 1 mp4 no audio file is 10 minutes long
I want to use ffmpeg to stitch them together and output a 5 minute mp4 video ( equal to the length of the input audio file )
Thank you

    


  • Randomly extract video frames from multiple files

    8 août 2014, par PatraoPedro

    Basically I have a folder with hundreds of video files(*.avi) each one with more or less an hour long. What I would like to achieve is a piece of code that could go through each one of those videos and randomly select two or three frames from each file and then stitch it back together or in alternative save the frames in a folder as jpegs.
    Initially I thought I could do this using R but quickly I’ve realised that I would need something else possible working together with R.

    Is it possible to call FFMPEG from R to do the task above ?

    I’ve trawled the internet looking for things that could help me start but most of what I’ve found is too specific and really applicable to what I need to do.

    Could anyone please help me out or simply point me in the right direction.

    Many thanks

  • Converting video to a full sized image using all frames

    13 décembre 2014, par sroot

    I was wondering if there is any way to convert a video to an image ?
    Something like a scanner algorithm , something that would basically take all frames and convert it into one big image ?
    I know i can break the video into frames and then stitch them together , I was wondering if there is any faster and more simple solution to achieve the same .
    If it can’t be done can someone think how can I take the video in a "scanner" like mechanism ?

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