Hallo, Thanks for your explanation. Deeply hidden on Hauppauges website I found a hint that the Soundblaster Live! could be the source of the problems. The suggested solution was to change the chipset settings 'PCI delayed transaction' to enabled. When I tried this, the number of these white lines was reduced, but this time I got many inserted frames when capturing. So it appears to be a PCI bus timing problem. Do you have any hints on how to optimize the chipset timings?
Thank you. Michael On Sunday 18 April 2004 09.29, you wrote: > Hallo > > > The first one is concerned with recording a video stream from a Hi8 > > source using a BT878 based card (that is, software encoding). From time > > to time (say in an interval of a few minutes), there appear horizontal > > lines in single frames. The pictures below show a sample. Note that the > > jpg image is interlaced. > > > > http://www.nada.kth.se/~hanke/files/pert.jpg > > http://www.nada.kth.se/~hanke/files/pert.ppm > > > > The perturbations are clearly seen near the knees. Did anybody experience > > similar defects? > > I think that this could be a problem of the BTTV chipset. If the card > notices that the data will not make it in time to the CPU, disk or > somewhere else the cards stops transmitting the current line, and starts > transmitting the next line. That behavior causes less visible artefacts > when you view tv. But makes mor problems when you try to encode the > video. ------------------------------------------------------- This SF.net email is sponsored by: The Robotic Monkeys at ThinkGeek For a limited time only, get FREE Ground shipping on all orders of $35 or more. Hurry up and shop folks, this offer expires April 30th! http://www.thinkgeek.com/freeshipping/?cpg297 _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
