[Live-devel] MJPEG support for MKV parser

[Ross Finlayson]

I took a look at your example MKV file.  It turns out that this file (and apparently all MKV files with JPEG video tracks) stores each JPEG frame as a complete JPEG image, including a JPEG header.  For RTP streaming, however, we don't include the JPEG header.  Therefore, to stream a JPEG video track from a MKV file, we'd need to add an additional filter (not currently implemented) that parses the JPEG header of each frame, to derive/extract out the 'type', 'qfactor', and (if non-standard) the quantization table - to put in the RTP packet.

This is something that might get done sometime in a future, but since JPEG video streaming is a bad idea (that nobody should really be doing in 2014), it's not a high priority for me.

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/

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