Hello Gentlemen,
i sent sent following email Petri Hintukainen and then found this mailing list, which looks like it could be a better forum for my questions.
Cheers, Raphael.
---------- Forwarded Message ----------
Subject: xineliboutput and WSS aspect ratio Date: Monday 14 January 2008 09:38 From: Raphael Coeffic rco@iptel.org To: Petri Hintukainen phintuka@users.sourceforge.net
Hi Petri,
i'm using at home VDR with your xineliboutput plugin for a few month, which is really a good software in my opinion.
The TV card i'm using is a Hauppauge PVR 250 (analog with hardware encoder, no decoder). As the card is able to embed VBI data (Teletext, WSS, etc...), i am wondering if i could use that information to set the correct cropping / aspect ratio.
The story begun as i noticed that the autocrop post plugin included with xineliboutput had a pretty hard time detecting letterbox 16:9 format on my host. During 16:9 broadcasts, it does most of the time just nothing. Then, maybe once every 10s, it would enable cropping during 1s and immediatly switch back to 4:3 format.
That's why i thought, i could use the Wide Screen Signal (WSS) to detect 16:9 letterbox without using the autodetection feature included in the autocrop plugin (which would save some CPU time, and surely work better at my place).
Concerning the VBI data, i will embed them into the MPEG TS, as specified by EN 301 775 (done in "pvrinput" VDR plugin). Then, i could decode those VBI data in xineliboutput. Now, this is where your help would be very usefull for me: i have no idea how to go further from there. Do you have some suggestions, how i could set the correct cropping parameters from within the xine frontend?
Thanks Raphael.
-------------------------------------------------------