On Tue, 2004-10-26 at 07:57, Bernhard Praschinger wrote: > Hallo > > > I am trying to capture a VHS PAL film using a DC10+ card (Pinnacle). > > The capture works fine, but I have to move the bottom field forward in > > order to get the correct pair of fields in the same frame. This works > > fine, but the next problem I don't know how to solve: the interlacing > > order appears to change every 1-4 frames. First I tried changing the > That sounds really strange. How much lst/ins frames do you get when you > record the part ? > I think for the 3 hours (using S-Video input), there were about 5 lost frames, and I'm not sure how many ins. I today rerecorded another 10 seconds with 0 lst and 0 ins and I've put 14 frames worth here:
http://www.scottwaye.com/lstest.avi > Are you soure that you always have interlacing. When there is no movment > in the Video > Yes even if the there is no movement for some frames you can see a comb effect. > > order but of course this changes which frames are correct and which > > display the comb effect. Is there any tool which can analyse the pair > > of fields and decide which should be the top on a frame by frame basis? > Not really. you can deinterlace the stream. which should work well or, > just leave it interlaced. You won't see comb effects on your TV-set. If > you play it back on a computer, most DVD player SW has a nice > deinterlacer that can also do the job. > I don't understand when you say "You won't see comb effects on your TV-set" I thought that when an interlaced stream is played on a tv, one half of the frame is played on one vertical scan, and on the next scan the other half of the frame is played _between_ the lines of the first half. Is that right? If so then if the order of the top/bottom fields is wrong, wouldn't the comb effect would still be visible above and below changing vertical boundaries, i.e. above and below the letters in titles? > > Or is my only option to drop the vertical resolution? > My personal opinion, ist to record at halfe size (-d 2) you have no > interlacing than. That resolution (PAL: 352x288 NTSC: 352x240) in MPEG1 > is allowed for DVD's according to the DVD Demystified > (http://dvddemystified.com/dvdfaq.html) > Thanks for the advice, I'll try that and compare the resulting mpeg > For more information about which size is usefull for recording form VCR. > You should take a look at the mjpeg-users mailinglist archive thread: > Re: [Mjpeg-users] VCR capture , Richard Ellis and I wrote at the > 23.Sept.2004 > Thanks for that, I'll take a look and try the whole process again. Although I notice today that the whole picture jumps up and down a small amount when played back VCR->DC10->xawtv and this vertical shaking is visible in the lavrec recorded avi and the encoded mpeg (on the computer and tv). The video played back VCR->TV is steady. Has anyone else had this? > > I intend to make a DVD for playback on a non-progressive system. > If you record at full resolution deinterlacing with yuvdenoise might be > a rather good and easy solution. > Ok, I'll give that a go too. > auf hoffentlich bald, > > Berni the Chaos of Woodquarter > > Email: [EMAIL PROTECTED] > www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
