How to select which one to show in case of dual video in .mp4 file?

Question

I'm using surfaceView where i'm rendering the video. I have a .mp4 file with video/hevc and video/avc. I made two threads such that they are extracted, decoded and rendered to the surface though the surfaceView. i can choose which video to show in the surface by changing this line in the thread:

 decoder.configure(format, null, null, 0);

to

 decoder.configure(format, surface, null, 0);

But how to do this dynamically on the fly with a click of a button?

Answer 1

If you are targeting Android version since M, you can set the surface on the fly by using MediaCodec.SetOutputSurface(Surface) Note that for avoiding decoders concurrence on the same surface, a (only?) solution (bad?) is to use another hidden surface and pass it to the first decoder before setting your desirated surface to the second one