On 7 Nov 2004, scott wrote: > > Hmm, but if you deinterlace does it matter (much) if the fields are > > reversed? You'll still get the single blended progressive frame out. > > > Yes, but if the fields are in the wrong order for a particular frame, > although it will be too quick for the eye to see exactly what happens, > one field would be higher than it should be and the other lower. I tiny
Not in a progressive frame which is what a deinterlacing program generates ;) In a progressive frame there is no "field order" - the two "upper"/"lower"/"higher"/"lower" fields have been blended/merged/whatever into a single frame. > judder would occur, in my case every 5 frames or so. Unless of course I > don't understand how an interlaced stream is played back to an ordinary > tv :-) I think you just missed my mention of 'deinterlacing' :) > This is material recorded from a commercial film ->VHS PAL > tape->VCR->S-Video connector->DC10+->lavrec (from kernel 2.6.8.1) > Its the same clip I talked about a week or so back and is here: Right - ok, I'd forgotten about that. The recommendation as I recall was to get an image stabilizer of some form or a TBC to give a cleaner signal to the DC10+. Who knows, that might even steady the image enough to improve the efficiency of the encoder. That's what happened when I used one of the Sima units - I didn't have a field order problem but there was a unsteadyness to the picture and when that was cleaned up the bitrate dropped in the final encoding. > If the CVS owners think any of this might be useful I can tidy my mods > up (tabstops, naming conventions, etc) and submit a patch? We're not the nit picking ffmpeg/MPlayer group so minor style differences are of no importance (I prefer tabs for example). Sure, tidy it up a bit and post it (mjpeg-developers would probably be a good place although this forum'd be OK too). Cheers, Steven Schultz ------------------------------------------------------- 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