On Thu, May 12, 2005 at 08:15:20PM -0400, Nathan Lutchansky wrote: > File size: try setting your frame size to 640x480 and your bitrate to
That's what I have. > 2000 or 2500. Anything above 1500kbps will be comparable to software I was using 2200, which seems to be the builtin default. > MPEG4 codecs. If you push it much lower, the bitrate control in the > hardware has trouble maintaining consistency and the quality will suck. > Don't expect to run at 800kbps like when transcoding DVDs; anything other > than a pristine film transfer has too much noise to compress well at those > bitrates, and even then it requires two-pass encoding which is impossible > with a live source. What about the audio part of the recording? MP3 or uncompressed wav? What rate? > Mangled frames: could you explain this a bit more? Myth seems to have > some issues finding a keyframe when seeking, but playback should be fine. > If you push the bitrate up around 6000 kbps, you'll probably see some > buffer overruns during periods of high action which will cause dropped > frames and weird artifacts. The other possibility is that you have the > device connected to a USB 1.1 port, which will cause similar behavior. I bought a USB2.0 board just to rule this out. I can be watching a show, and all of a sudden, the screed turns to a burst of strange pixelated squares. Hitting pause, backing it up frame by frame, I see 1-3 frames that are garbage. The machine is lightly loaded, nothing else running. No apparent timing similarities, nor anything in the scenes that are close (like quick action, bright sections, etc). > Viewing the recordings: I can't help with this one since I don't export > anything from my Myth system. But the hardware produces MPEG4 as standard > as standard can be, so converting from the Myth NUV files shouldn't be > hard for external tools since it's just a container format change. One would think... I'll have to do some more digging. > Random failures opening /dev/video0: I've not seen this with Myth, but it > sounds pretty serious. What is the error message you're getting? -Nathan It's been alternating between "Permission denied" and "no device /dev/video0". Tim -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< >> Tim Sailer >< Coastal Internet, Inc. << >> Network and Systems Operations >< PO Box 726 << >> http://www.buoy.com >< Moriches, NY 11955 << >> [EMAIL PROTECTED] >< (631) 399-2910 (888) 924-3728 << >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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