[Live-devel] very low resolution playback

[Ross Finlayson]

>Is the openRTSP client library present in vlc re-compressing the jpeg 
>frames when
>re-calculating the
>quantization tables from the Q factor?

The "LIVE.COM Streaming Media" code doesn't do any compression or 
decompression.  For JPEG RTP streams, the receiving code 
("JPEGVideoRTPSource") is simply reconstructing the JPEG headers (with 
quantization tables), based on the RTP header information.  See RFC 2435 
and "JPEGVideoRTPSource.cpp".

>Should I send the original JPEG file header quantization tables with the 
>frame data to
>acquire the
>original frame resolution?

I don't know, but if the default quantization tables constructed by the 
JPEG/RTP receiving code (based on RFC 2435) don't give you what you want, 
then you may need to do this.


	Ross Finlayson
	LIVE.COM
	<http://www.live.com/>