On 10/7/19, Richard Branham <branham.rich...@gmail.com> wrote: > I have four mp4 recordings of a video conference feed. After the > conference ends, the files are multiplexed into a single video with each of > the original files displayed in a quadrant of the output window. This > works as expected if all four videos are of the same duration. > > If the primary user starts recording at time T0 and the other 3 join at > X seconds later, I need the individual videos in the muxed file to start at > T0 + X. I also need the primary user's video to continue even after a > subsequent user leaves the conference and their video ends early. > > My first thought is to lengthen the shorter videos by concatenating a black > screen to the beginning and/or end to make the shorter video the same > length as the primary one and to offset the short video to the correct > point in the conference recording. > > Is this the best way to go, or is there a more straightforward approach?
Yes, try tpad filter. > > Thanks! > Richard > _______________________________________________ > ffmpeg-user mailing list > email@example.com > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list firstname.lastname@example.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".