"M. Osten" wrote: > > I use vcr to capture television programs with a brooktree tuner/capture > card. It seems that the channels at the lower end of the spectrum (ie > 2,3,4) have poor reception due to bad in wall cables. When I do > captures on these channels drop lots of frames in an hour. Channels at > the higher end of the spectrum do fine. > > Machine is a dual P3 933 with 1 gig of ram, and 170 gig of ATA 100 > 7200rpm drives. > > Capture thread exiting > Captured 111504 frames. > Frames dropped in capture: 652 (0.0%) > Frames dropped in encoder: 1191 (0.0%) > Exiting.. > Waiting for write thread > MP3EncodeR::Close() > Write thread exiting > Waiting for audio thread > Waiting for video thread > All threads exited > v4l1: VIDIOCCAPTURE in ::setCapture > v4l1: VIDIOCSYNC in ::~v4l1if > v4l1: ioctl VIDIOCCAPTURE in v4l1if::~v4l1if > Total Unfree 3596428 bytes cnt 49 [0,0] If the signal is weak, the video capture card will often miss the vertical synchronisation pulse (it gets lost in the background noise). When this happens, it detects that too many lines have been received in a frame, and does a resynchronisation, effectively dropping a frame. The only way around this is to get a better signal. -justin
