This seems to depend upon something, I think it's whether or not the computer is very active with the CPU doing other things. I have seen it really good during a playback and really horrible with the same exact playback. It was just a cat /dev/video0 > /dev/video16 process when pretty good, but when running Myth (which really wouldn't have anything to do with Myth directly, just the CPU usage, from the vbi work queue), it was pretty bad at CC output. So really good compared to before, still some problems and probably missing buffers Hans has seen.
Thanks, Chris On Mon, May 09, 2005 at 03:29:54PM -0500, Chris Kennedy wrote: > Also if using Myth, you have to run 'ivtvctl -w cc' first, before starting > viewing, that enables VBI passthrough, otherwise it won't send this to > the decoder, something that in the future would be turned on by Myth > possibly by either the CC enable menu selection or just automatically > (since that must be for using the OSD to show CC, while this native support > allows a TV's default CC captioning to show it). > > Thanks, > Chris > On Mon, May 09, 2005 at 03:06:21PM -0500, Chris Kennedy wrote: > > Hans, > > > > Further testing shows it's just about perfect here on timing, actually > > is perfect on timing of the CC output, and just repeats a few characters, > > yet very very rarely does it. I don't see anything missing, just repeating > > characters it seems, so really really good looking (not sure how repeat > > characters would happen, if reusing old data, buffer not updated, seems > > to always be 2 characters over and over again, but not near as bad as > > before). > > > > Thanks, > > Chris > > On Mon, May 09, 2005 at 08:10:14PM +0200, Hans Verkuil wrote: > > > On Monday 09 May 2005 19:55, Chris Kennedy wrote: > > > > Also some other notes, right now I have it where you have to read the > > > > /dev/vbi4 file to start the vbi input to the saa7127, since otherwise > > > > it wouldn't read those buffers and they would overflow, plus to > > > > dynamically > > > > allocate the streams it is the only current way I could quickly make > > > > that > > > > work. I think either allocating that stream upon decoder startup and > > > > unmasking the interrupt then again, and marking it as a NO_READ stream > > > > upon > > > > decoder startup until read from the device, is the way to go. I'll > > > > look at > > > > doing that here in a second, shouldn't be too hard to do it that way. > > > > > > > It > > > > looks pretty good on output besides either missing chunks of VBI data, > > > > or > > > > repeating characters. > > > > > > Both, actually :-) > > > > > > I've much improved it already, but still not all VBI frames are inserted > > > into > > > the mpeg stream, about once every 3 seconds a frame is missed somehow. I > > > think that bug might be trickier to find/solve. > > > > > > Hans > > > > > > > > > ------------------------------------------------------- > > > This SF.Net email is sponsored by: NEC IT Guy Games. > > > Get your fingers limbered up and give it your best shot. 4 great events, 4 > > > opportunities to win big! Highest score wins.NEC IT Guy Games. Play to > > > win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20 > > > _______________________________________________ > > > ivtv-devel mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/ivtv-devel > > > > -- > > --- > > Chris Kennedy / [EMAIL PROTECTED] > > Engineer KMOS-TV/KTBG-FM > > Broadcasting Services Department > > Central Missouri State University > > > > > > ------------------------------------------------------- > > This SF.Net email is sponsored by: NEC IT Guy Games. > > Get your fingers limbered up and give it your best shot. 4 great events, 4 > > opportunities to win big! Highest score wins.NEC IT Guy Games. Play to > > win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20 > > _______________________________________________ > > ivtv-devel mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/ivtv-devel > > -- > --- > Chris Kennedy / [EMAIL PROTECTED] > Engineer KMOS-TV/KTBG-FM > Broadcasting Services Department > Central Missouri State University > > > ------------------------------------------------------- > This SF.Net email is sponsored by: NEC IT Guy Games. > Get your fingers limbered up and give it your best shot. 4 great events, 4 > opportunities to win big! Highest score wins.NEC IT Guy Games. Play to > win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20 > _______________________________________________ > ivtv-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ivtv-devel -- --- Chris Kennedy / [EMAIL PROTECTED] Engineer KMOS-TV/KTBG-FM Broadcasting Services Department Central Missouri State University ------------------------------------------------------- This SF.Net email is sponsored by: NEC IT Guy Games. Get your fingers limbered up and give it your best shot. 4 great events, 4 opportunities to win big! Highest score wins.NEC IT Guy Games. Play to win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20 _______________________________________________ ivtv-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ivtv-devel
