This is extension for linux kernel module usbtv for Fushicai USBTV007, enabling doulbe frame rate progressive video. This format is popular on some older computers like Atari 8-bit.
- Avaible on "S-Video Retro" input.
- Every half frame is sent to user space - doubling frame rate.
- Black lines are cloned from neighbours lines.
- Vertical resolution stays the same, input can be switched during playback.
- return proper v4l descriptor