On 14/09/05, Leonard Orb <[EMAIL PROTECTED]> wrote: > Hans Verkuil wrote: > > >> fine, except one problem: Recordings using the pvr 250s show mpeg > >> artifacts, sound drop outs and sometimes even the video steps, i.e. > >> some tenths of a second simply are missing. This happens not very > >> ... > > > > Does dmesg show any ivtv errors when this happens? > > No, nothing special. I've turned on debug messages also (ivtv_debug=203), > but there was no scaring or at least unusual info logged either. > > > If you use the defaults for stream_type, bitrate and dnr_mode etc., do the > > same problems occur? > > I'll try it out. Jftr: my ivtvctl settings before 0.3.8 were: > > opt | param > -u | 0xff (i.e. PAL) > -f | width=720,height=576 > -c | aspect=2,audio=0xE9,bframes=3,bitrate_mode=0,bitrate=8000000, > | bitrate_peak=16000000,framerate=1,framespergop=12,stream_type=10 > -y | brightness=128,hue=0,saturation=64,contrast=64,volume=60000, > | mute=0 > > With 0.3.8 i have added "dnr_mode=3" to -c because it seemed that noise > filtering was turned on by default now, which gives smaller files, but > also leads to slightly lower quality, esp. lower definition. Btw: it is > wise to turn noise filters on by default, it is just no good for me > because signal quality is excellent here and disk space is no problem.
You may not need m(any) of these options with 0.3.8 Try stripping right back. Remove -u, -f and the aspect, bframes, framerate and framespergop options to -c. I use dnr_temporal=0 rather than setting dnr_mode to 3 as the later didn't remove the ghosting I was seeing at resolutions below 720x576. You may need to keep the other options if you're not using PVR software to set these things up. Best to strip right back and then cautiously add back in until you have what you need. Cheers, Wilf. -- [EMAIL PROTECTED] | MythTV blog: http://mezzanines.blogspot.com/ ------------------------------------------------------- SF.Net email is sponsored by: Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php _______________________________________________ ivtv-devel mailing list ivtv-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ivtv-devel
