Cecil Westerhof via ffmpeg-user <ffmpeg-user@ffmpeg.org> writes: > Ferdi Scholten <fe...@sttc-nlp.nl> writes: > >> I want to play a video in a video from a certain point. I understood I >>> could do something like: >>> ffmpeg \ >>> -i input1.mp4 \ >>> -i input2.mp4 \ >>> -filter_complex " >>> [0:v][1:v] overlay=25:25: >>> enable='between(t,8,20)' >>> " \ >>> -pix_fmt yuv420p \ >>> -c:a copy \ >>> output.mp4 >>> >>> But this starts input2.mp4 from the start of input2.mp4 on the 8 >>> second, for twelve seconds. >>> Is it possible to let input2.mp4 not start from second 0, but from >>> second 17? >>> >> Try putting -ss 17 between the two inputs. > > I was thinking about that. But that means that if I want to use > input2.mp4 several times, I should use input2.mp4 several times with > the correct -ss. Not really a problem, but I had hoped for a more > efficient way. But I will use it like this for the moment then. > Thanks.
At the moment I have: ffmpeg -y \ -to 30 -i "${inputFile}" \ -ss 11 -to 28 -i "${overlayFile}" \ -filter_complex " [0:v][1:v] overlay=main_w-(overlay_w+10):10: enable='between(t,8,25)' " \ -pix_fmt yuv420p \ -acodec libmp3lame \ -vcodec libx264 \ -preset veryfast \ -crf 26 \ "${outputFile}" It works, but I have a question and found a problem. In most cases you will not encounter the problem, but because I am testing I did encounter it. First I used for the overlay file only '-ss 11'. But I needed the to also, otherwise the video would freeze and keep playing. But in a strange way. The overlay file is 60 seconds long. When subtracting 11 seconds that leaves 49 seconds. The resulting video would become 49 seconds long instead of 30 seconds. I would prefer 30 seconds of-course, but I do not understand the 49 seconds. The overlay file starts at 8 seconds, so I find it strange that the file does not continue to 57 seconds (49 + 8). This seems a double bug to me. (Not using the length of the main file and using the length from the overlay file without consideration when it starts.) In my search to find this solution, I think I saw a method to scale the overlay file. But I cannot find it anymore. :'-( Am I mistaken, or is it possible? I would like to scale the overlay file to 640:-2. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".