How to extract video frame from all video streams of file.

[arthurgib]

Hello!
I have file with two video streams. I can extract video frame only from second stream of file. How i can extract video from both streams?

And what about this issue? #539

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[wang-bin]

A little complicated because we need more decoders.

[wang-bin]

BTW, can you give me your video sample? I've never seen such a video.