Re: [libdv-dev] Compiling and Installing libdv - Video stabilities problems.

[Dan D. <da...@de...>]

On Tue, 2004-07-13 at 16:14, Sergio Roysen wrote:
> Hi,
> 
> I'm smashing my head against these problems.
> 
> I'm trying to capture dv data from a camera. Using the stock libdv that 
> comes with the distro I'm using (SUSE 9.1 and libdv version 0.101-43, guess 
> that would be 1.01 built 43) I noticed the video seems very unstable. At 
> time it turns to its negative form or to a sepia color, at times it shakes 
> or do some zomming in-out at its own will, at times it changes its aspect 
> ratio, at times it superimposes frames taken among several seconds (like 
> doing a fade in fade out). Assumed it has something to do with newer 
> versions of libdv so I uninstalled that stock version and installed the 
> 1.02 one. After the ./configure; make and make install everything seemed to 
> be OK, no complains at all. But whenever I try to use dvconnect it does 
> nothing. And I mean nothing. Even trying 'dvconnect --version' does 
> nothing. The program just exits. I see no core dumps or segmentation 
> faults, and now I'm completely lost. playdv does something similar. If I 
> use playdv ExampleFile.dv, it plays the file, but if I use 'playdv 
> --version' it exits with the message "open:: No such file or directory".

The problems you report are strange indeed, and I have not heard or
experienced them. Is this on x86?
I can understand a potential problem with using 0.101 because we
versioned it wrong and created a binary compatibility problem. But that
is impossible with 0.102 due to the way it is versioned. Are you sure
you completely uninstalled 0.101 and all of its utilities?

> I know I must be doing something incredibly stupid, but I can't figure out 
> what. Also, is that kind of unstableness with the video common? What could 
> be its source?

No, this is not common at all! There is a memory problem in 0.102 with
certain applications but not playdv or dvconnect.

> After trying a lot of things I installed the demo version of the MainActor 
> suite for video editing and it exhibits the same video stabilities issues. 
> Guess it doesn't use the libdv library, so this must be coming in from 
> another source. Any ideas?

Hmm. Interesting, I now suspect the Xv extension of your X
server/driver. See if disabling Xv and SDL playback in playdv helps, use
the option "-d1" with playdv.