On Wed, 2008-11-19 at 01:45 -0500, Al McIntosh wrote: > I am recording from the SVIDEO input. > > On Wed, Nov 19, 2008 at 1:41 AM, Al McIntosh <[EMAIL PROTECTED]> > wrote: > I have been testing the HVR 1600 mostly using mythtv, > > 1 recording had hyperfast audio playback and I am also > noticing intermittent skips in audio, silence for about a 1 > second. > > Is this currently common behaviour?
This is a known problem with the first analog (e.g. SVIDEO) capture after modprobe. All subsequent captures after that one should be fine. I have an idea on how I might fix it. It's on my todo list. Since it has a simple workaround, it's pretty low on the list. > I noticed this in my dmesg : > > [ 3087.476431] cx18-0: Cannot find buffer 33 for stream > encoder MPEG > [ 3087.476442] cx18-0: Could not find buf 33 for stream > encoder MPEG This is the first message in a downward spiral of dropping buffers out of the driver <-> firmware buffer transfer rotation. If enough of those happen during a capture, the capture will stall. It is caused by a long interrupt response latency in your system (with the driver contributing to that latency). and the driver not checking for the firmware to driver mailbox being stale and possibly overwritten by the firmware. My latest changes in my experimental repo addresses precisely this problem. See my recent announcement on the lists. Regards, Andy _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
