Issue: Not allowed, the files come from somewhere I cannot control. Possible solution: Preprocess videos to have the moov atom at the front. Issue: file descriptor from java is not seekable, it's more of a stream. I'm not doing any heavy work, or more complicated ffmpeg callsĪttempted solution: Set up custom AVio calls that open the descriptor as a file stream, and handle it that way. Issue: ffmpeg cannot read an mp4 over the pipe protocol, because it needs to seek back to the start once it finds the moov atom.Īll I'm doing is remuxing the videos. I pass its file descriptor to an ndk call that does all the ffmpeg processing using the pipe protocol. Right now, I have a Uri for the file that I get a ParcelFileDescriptor from. What I am running into is getting an mp4 file to ffmpeg in a protocol it can actually work with. I have ffmpeg compiled, linked, and I can confirm that it works as expected in my ndk calls. I need to trim part of an mp4 file, using ffmpeg on android.

I have been banging my head against the wall on this for a while now.

Ffmpeg mp4 android