[Live-devel] Cannot play scaled file properly using QAM video card: file does not conform to DVB standards

[Jeff Wisgo]

I have been tasked with writing trick play logic to work with the Video
Propulsion Q4LP QAM card, so as a proof-of-concept I am trying to use the
"testMPEG2TransportStreamTrickPlay" test program to generate a 8x scaled
file to simulate Fast-Forward. The file I generated plays fine on VLC and
WMP, however it does not play at all on my QAM card. When I asked the
VideoPropulsion technical support, they said the 8x .ts file did not conform
to 'DVB standards', and more specifically:

"There are repeated PTS & PCR timestamps having the
same value. They look to be creating a PES packet for
every slice of the video elementary stream, which is
also unusual to say the least."

I am curious if this is a bug with the live-555 logic, or if this working as
designed. Would modifying the live-555 code to generate 'DVB
standards'-compliant code be a major effort?

> Jeffrey Wisgo
> 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/ms-tnef
Size: 2638 bytes
Desc: not available
Url : http://lists.live555.com/pipermail/live-devel/attachments/20070813/8a00d3da/attachment.bin