Does the Blackmagic SDK allow Slow Motion Instant Replay?

Does the Blackmagic SDK allow Slow Motion Instant Replay?

I'm curious to know if there is a way to take SDI camera input video frames and then allow slow motion instant replay while continuing to record.

Additionally, I'd like to take the video frames and output them on an RTSP stream.

Does anybody know if this is possible?

Thank you.


Input: Several SDI Cameras
Outputs: RTSP Stream, Slow Motion Instant Replay

Yes, it is possible to do. Just remember the SDK only captures and plays back raw frames, any compression, file handling or serving would be from your own code.

Regards,

Dave.

See https://ianmorrish.wordpress.com/2016/11/19/instant-replay-time-shift-on-the-cheap/
Advantage of using H.264 hardware encoding (via TVS or Pro Recorder) is dramatic reduction in CPU overhead and very lightweight app to record the stream to disk.
VLC can playback the stream at the same time it is being recorded and provides speed control and seeking to time via remote TCP connection.

If you want to do it with Decklink cards then check out CasparCG there are several SlowMo projects based on it.

Yes, it is possible to do. Just remember the SDK only captures and plays back raw frames, any compression, file handling or serving would be from your own code.

Regards,

Dave.

Thank you very much for this information.