[Live-devel] Streaming RTSP and pulling single frames

[Jeff Shanab]

I allow snapshots from my video to be saved when  a user pauses and navigates to a frame.
This is done by encodeing the RGB image into a JPEG image with avcodec.

I also allow pulling a snapshot from a file at a timestamp.
In this case I navigate to the closest keyframe, decode it from h264 and enode to JPEG and offer it up for view or save.

H264 like mpeg4 deals with keyframes and difference frames so you must find the frames with the nal types [7][8] and [5] and send all three to the decoder for it to know how to decode it.


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From: live-devel-bounces at ns.live555.com [mailto:live-devel-bounces at ns.live555.com] On Behalf Of Czarnek, Matt
Sent: Thursday, February 14, 2013 9:42 AM
To: live-devel at ns.live555.com
Subject: [Live-devel] Streaming RTSP and pulling single frames

Hello,

I would like to is pull from a RTSP stream, and then pull individual frames (whole images) from it and be able to pass pointers around and use those frames from there.  Seems like it should be simple but I'm going in circles.

I see testRTSPClient & openRTSP and more or less see how they work & that they can save to a file but am still having trouble figuring out how to pull individual images from the stream.  The more versatile the better but I at least need to be able to support H264.  Any thoughts?

Thank you!
Matt

--
Matt Czarnek, Software Engineer
Work Phone:  (760) 462-5843<tel:%28760%29%20462-5843>


ObjectVideo Inc.

http://www.objectvideo.com<http://www.objectvideo.com/>
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