[Live-devel] Trick play support

[Ross Finlayson]

>I just tried out the liveMediaServer on a MPEG2 TS stream, with the
>Motorola/Kreatel STB 1510 as client. Definitely interesting results.
>Though the behavior was a bit flaky, the streams actually ran, and all
>trick-play operations worked, to some extent.
>
>However, there were some glitches, for instance video were quite a bit
>distorted on ffwd with high scales, and the client crashed at a number
>of times, during trick play operations.

Only Motorola can help you with that :-)

>
>I've got two followup questions:
>* Is there a "reference" client to try with, supporting trick-play.

No, not really.  However, the Amino 110 set-top box is known to work.

>* During the test, i ran a packet capture on the streaming server. The
>packet capture showed very clean nice network traffic out from the
>server during regular play, but during fast-forward, the bandwidths
>jumped sky high, and sometimes exceeded 20 mbit/second on a VBR stream
>with an average bitrate of 5mbit/s. Is this expected behavior?

Yes, because the streams used for fast-forward and reverse play 
consist solely of I-frames.

-- 

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