Buster 202007012 - Unable to assign Audio PID

Discussion about this major DATV Project. See also https://wiki.batc.org.uk/The_Portsdown_Transmitter
Post Reply
HB9DUG
Posts: 16
Joined: Wed Jun 18, 2008 8:46 pm

Buster 202007012 - Unable to assign Audio PID

Post by HB9DUG » Mon Jul 13, 2020 1:56 pm

Hello Dave,

With the DVB FW, I am now able to run Buster with the C920 and audio at SR 4000 without problem. So I decided to test it on the HB9TV Network which uses DVB-S, SR4000, Video PID 33 and Audio PID 49, I configured the PIDs on Menu 29, but unfortunately the Audio PID is set to 34 when transmitting...

Correct behavior for this configuration or bug ?

Merci for your help
73 qro de michel, hb9dug

G8GKQ
Site Admin
Posts: 1682
Joined: Sun Mar 22, 2009 1:21 pm

Re: Buster 202007012 - Unable to assign Audio PID

Post by G8GKQ » Mon Jul 13, 2020 4:44 pm

Hi Michel

It is a design feature of Evariste's H264 encoding software that the Audio PID is always the video PID + 1. The reason that you can set it in Portsdown is that my MPEG-2 encoding software allows the audio PID to be set as you want.

I think that you could change Evariste's code to set it as you want (and then recompile). The relevant file is avc2ts.cpp and you would need to change this line I think:
https://github.com/BritishAmateurTelevi ... .cpp#L2338

Please let me know if it works!

Dave

HB9DUG
Posts: 16
Joined: Wed Jun 18, 2008 8:46 pm

Re: Buster 202007012 - Unable to assign Audio PID

Post by HB9DUG » Tue Jul 14, 2020 4:50 pm

It works!

Thank you Dave

Post Reply

Return to “The Portsdown Digital ATV System”