![]() I also tried -itsoffset and that appears to do nothing at all, regardless of where i position it. 1 Answer Sorted by: 3 Use the concat demuxer instead: Create a text file of the following format file 'C:\source.mp4' inpoint 0 duration 1 file 'C:\source.mp4' inpoint 3 duration 1 file 'C:\source.mp4' inpoint 6 duration 1 file 'C:\source. Using the amix filter didn't work either although i was able to combine an arbitrary number of input files, they all started at the same time, because i haven't been able to delay the onset of each individual component audio file beforehand. Examples Merge two mono files into a stereo stream: amovieleft.wav l. or write your own as opposed to struggling with complex ffmpeg filter graphs. The script doesn't know beforehand how long each of the source audio files will be, so a simple -filter_complex using concat didn't work. If inputs do not have the same duration, the output will stop with the shortest. Check Ffmpeg-concat 1.3.3 package - Last release 1.3.3 with MIT licence at. For example, if i have the files beep1.wav, beep2.wav, and beep3.wav, the resulting output.wav should be a mono sound file where the contents of beep2.wav will be heard starting at the 1-second mark, the contents of beep3.wav at the 2-second mark, etc. ![]() wav file must start n seconds into the final output file. For example, this simple command concatenates two video files input1.avi and input2.avi in one with a name output.avi ffmpeg -i input1.avi -i input2.avi -filtercomplex concat output.avi I provided. Then join using -f concat -i text.txt and also with -fflags genpts -async 1 The -fflags genpts -async 1 is necessary to ensure that the concatenated audio segments will switch over at the same time as the video segment. I'm trying to write a script that will take an arbitrary number of of. Then create a text file with one entry on each line like file '360a-a001.mp4, interleaving the entries in the correct order.
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