Hi all,

I've used Cinelerra for several months now, and it's a very nice piece
of work. However, there's one major problem: rendering to raw DV appears
quite buggy - and that's a real shame, since I wish to store my finished
projects on camcorder tapes, in DV format.

The problem: weird artifacts (clicks) show up at seemingly random
locations in the sound tracks:
http://www.linetec.nl/cinelerra/cin_sound1.png. 
Often, series of clicks appear at very very regular distances of 2.01
seconds (http://www.linetec.nl/cinelerra/cin_sound2.png), and 
http://www.linetec.nl/cinelerra/cin_sound3.png shows one such click in
detail.

I found these problems in all recent Cinelerra 2.0 builds, both on i586
and x86_64 machines. Other relevant settings: audio: 48000 Hz, video
[EMAIL PROTECTED] FPS (PAL).

This behaviour makes exporting projects to DV all but unusable, and I'd
like to know of there's anything I can do to prevent or work around
this.

Another audio problem I thought I noticed is that excessive volumes
aren't simply clipped, but get inverted - this happens when an MSB
overflow isn't handled correctly. I haven't tested this any further,
though, since this is easily overcome (reduce sound level to prevent
clipping).

Another problem with DV rendering seems to have to do when the luminance
of scenes (or even areas) is brought below 10 - when exporting the
resulting DV file to a DVD recorder, these scenes get completely messed
up, as if the recorder doesn't get any picture information from these
areas (it retains the last full picture). I haven't tested this either
with new builds, though.


Thanks in advance for any information to solve this,

Regards,

Richard Rasker


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