Yes, I noticed this issue here, too. It regularly happened when I used the af9015-tree from linuxtv.org, because I also have such a device. After switching to the current v4l-main-tree a few weeks ago, my pvrusb2 hadn't produced such a buggy stream. Don't know if it is because that error only occures very seldom or if it is because of a fixed bug. I would suggest that you compile and install the latest stable v4l-tree.
Regards, Carsten Am Sat, 13 Dec 2008 20:04:09 +0100 schrieb Bjorn Danielsson <[email protected]>: > Once in a while I get an unusable video stream, and I want to ask > here if anyone else has seen the same symptoms. I start streaming > and get both video and sound, but the video is extremely "jerky" > with mplayer, as if everyone in the picture has severe chronic > spasms, including the furniture sometimes... > > I have seen this happen a couple of times per month, and usually I > just stop the streaming and restart (re-open /dev/video0) and then > the problem goes away. But I am worried that this might happen while > recording something. This has fortunately not happened yet, or perhaps > unfortunately because a saved broken MPEG would really make it easier > to debug this. But I did manage to catch the output from an affected > mplayer process recently: > > AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample) > Starting playback... > VDec: vo config request - 720 x 576 (preferred colorspace: Planar > YV12) VDec: using Planar YV12 as output csp (no 0) > Movie-Aspect is 1.33:1 - prescaling to correct movie aspect. > VO: [xv] 720x576 => 768x576 Planar YV12 > [mpeg2video @ 0xb90c60]ac-tex damaged at 7 0 > [mpeg2video @ 0xb90c60]00 motion_type at 8 1 > [mpeg2video @ 0xb90c60]00 motion_type at 4 2 > [mpeg2video @ 0xb90c60]mb incr damaged > [mpeg2video @ 0xb90c60]00 motion_type at 5 4 > [mpeg2video @ 0xb90c60]slice mismatch > [mpeg2video @ 0xb90c60]00 motion_type at 25 6 > [mpeg2video @ 0xb90c60]ac-tex damaged at 0 7 > [mpeg2video @ 0xb90c60]invalid cbp at 2 8 > [mpeg2video @ 0xb90c60]00 motion_type at 2 9 > > and it kept going on like that. The pvrusb2 driver in this case is > the one bundled with linux-2.6.26.2. > > I can't be sure of course that these broken video streams have > anything to do with the pvrusb2 driver, but I think I have already > excluded some of the more "obvious" failure modes, because I know > that: > > + The problem has occurred on two different pvrusb2 hardware devices > + This never happened when I used the old libusb userspace driver > + This never happens when I stream DVB-T to mplayer via the same > software > > Don't we all love intermittent failures? :-) > _______________________________________________ pvrusb2 mailing list [email protected] http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
