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  • faster way to concatenate movie clips using moviepy ?

    1er avril 2019, par Abhishek Agarwal

    By using Moviepy library i found a better way for making clips

     clip_1 = ffmpeg_extract_subclip(filename,
    
                       t1, t2,
    
                       targetname="test1.mp4")
    

    
rather than using VideoFileClip function
    

    
clip1 = VideoFileClip("test1.mp4")

    However i was thinking if we could combine 2 or more video files with such a speed difference using any other methods other than

    final_clip = CompositeVideoClip([clip1,clip2])

    or remove the print functionality of the module to speed up the process ??

  • Specifying Full input video duration in an ffmpeg expression for crop filter

    23 mai 2018, par yoda89

    I have to use panning effect on a video from left to right, for that I used crop filter and also figured out the expression for the effect, but the expression requires full input video duration. So I was wondering if there is an ffmpeg constant for specifying that. Like we have iw for input width and ih for input height.

    I am using the command given below, except that I have to hardcode duration of the input video in place of [DURATION].

    ffmpeg -i input.mp4 -vf crop=iw/3:ih:2*t*iw/[DURATION]*3:0 output.mp4

  • Append tracks in Movie using FFMPEG android

    19 juin 2014, par Arslan Ahmad

    I want to APPEND a 2 audio track and one video in to the Movie I am using FFMPEG library. It always pick second sound track instead of both. Any help ?

    Movie result = new Movie();
    

    
            if (audioTracksRecordAppend.size() > 0) {
    
                result.addTrack(new AppendTrack(audioTracksRecordAppend
    
                        .toArray(new Track[audioTracksRecordAppend.size()])));
    
            }
    

    
            if (audioTracksRecord.size() > 0) {
    
                result.addTrack(new AppendTrack(audioTracksRecord
    
                        .toArray(new Track[audioTracksRecord.size()])));
    
            }
    
            if (videoTracks.size() > 0) {
    
                result.addTrack(new AppendTrack(videoTracks
    
                        .toArray(new Track[videoTracks.size()])));
    
            }

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