Hallo, On Tuesday 10 February 2004 19.44, Bernhard wrote: > > I am using the edit tab of LVS only because my hardware is much to slow > > for capturing in the GUI. > > Why ? That shouldn't matter that much. I am using sogtware encoding since I own a Hauppauge WIN-TV (Bt878 besed) card.
> > - Effect windows seem to work. The picture looks strange: Instead of dark > > colours, white pixels are displayed. Loosely spoken, black is represented > > as white while gray (and colored) tones are displayed correctly. > > That can be some wrong options or something like that. Could you plreas > run LVS in th debug mode (lvs -d) so I can see what happens. I found the problem. It is concerned with lavtools. I was recording the fooprint using lavrec. Apparaently, it produced many pixels (at least 10% per image) with YUV out of the spec (16<=Y<=235, 16<= u,v <= 240). Since matteblend.flt is programmed using the exact spec, a lot of overflow/underflow conditions appeared giving rise to the above mentioned effects. I added some code to matteblend.flt.c in an attempt to force the standard. This worked well, although the process became much slower. I heasitate to submit the code to the repository because this seems to address a much more severe problem: Which parts of mjpeg-tools depend on the standard being obeyed? *Where* should the constraint be enforced? For example, lavplay works well for material out of bounds. What about mpeg2enc? On Friday 13 February 2004 23.53, Ronald wrote: > On Mon, 9 Feb 2004, Michael Hanke wrote: > > Here is what I got in the edit tab: > > - With all the video extensions loaded into the xserver: Playing the > > video gives only colored lines. > > [..] > > > - Removing the XVideo extension from the server makes the play window > > working. > > This is an issue in SDL that I don't know how to solve. I think I worked > on this recently in the SDL plugin in GStreamer, but didn't forwardport > that to mjpegtools' SDL code... I probably should. > > Shall I make a "known issues" list for some random tools i the future? Good idea. In XFree 4.0.3, I did not have this problem. It seems to start with 4.1.0 Thanks, Michael ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. Build and deploy apps & Web services for Linux with a free DVD software kit from IBM. Click Now! http://ads.osdn.com/?ad_id56&alloc_id438&op=click _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
