On 20-Sep-2002 Ronald Bultje wrote:
| Hi Ralf,
|
| On Fri, 2002-09-20 at 13:11, Ralf Oehler wrote:
| > Only one stain left: When I record without sound, I get no
| > lost/deletet/inserted frames at all. Great.
| > When I record sound, too, I get inserted frames. (20-30 frames per
| > 10
| > seconds) Every few seconds, without rhythm, the record-time-display
| > stops
| > for a few frames, then continues. A few tenths of a second the
| > inserted-frames-count increases a few frames. When playing the video
| > with
| > lavplay or mplayer the video jumps at theese places.
|
| I think your HD is blocking the capture. Using --file-flush=0 should
| fix
| this.
|
| Ronald
|
OK. I tried --file-flush=0. It gave marginal improvement. Reducing the
Resolution to about 160x120 solves the problem completely. I recorded
several minutes without Problems (except the inacceptably low resolution)
Other Problem: I connected my analog video camera to bt878 and displayed
the picture through xawtv (grab, not overlay). Perfect.
I recorded this with lavrec and gut a sort of mis-synced image.
Looked as if on an interlaced picture one half-picture is rolled 50 lines
down while the other half-image is shifted 30 pixels left and 50 down.
Looks ugly. Some timing-problem in the routine which reads the video
buffers?
Since xawtv does it right, I tried it's "streamer"-tool. It records
perfectly 384x288+mono16 to MJPG(80%).avi
(But that's the limit, CPU is at 99% and moving the mouse causes
frame-drops with my K6-III/450)
I installed v4l2 then and it reduced the frame-drops.
So it seems that lavrec could learn something from xawtv.
Thanks for the help.
Regards,
Ralf
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time is a funny concept
