Jonathan Woithe wrote: > > Hi all > > > I've been running some more tests using mjpegtools 1.6.2 and have a couple > > of questions regarding some odd effects I've seen when the result was played > > on a PAL DVD player. ... > > : > > Another thing I noticed about this DVD is that motion is sometimes > > noticeably jerky on hardware players. It's most noticable when the scene > > pans to follow a speaker (it's a conference DVD): the background doesn't > > flow smoothly but appears to jump. I think the effect happens with all > > movement though - it's just most noticeable when there's lots of it. We're > > not taking about excessive movement here - just someone walking in front of > > a background which was perhaps 10m behind. > I think I've at least partially solved this problem. Over the weekend I > tried encoding with the the "-z t" mpeg2enc option and the result was > noticeably better when played back on the hardware player. mpeg2enc claimed > the frame order of the incoming stream was bottom first, so the above option > reversed the field order. Although some jerky motion remained (particularly > in the movement of the background during panning) it was nowhere near as > bad as it was before utilising this option. That you should take a look at the single fields. Maybe something got mislabled. Chech out the mjpeg-howto section: Notes about "interlace field order - what can go wrong and how to fix it" There the process is described.
> It may be that some of the field-related options of yuvcorrect might impove > things further - again, I will attempt to test this over the next few weeks > as time allows. On problems could be that the field order changes between the scenes. That is allowed. If it is that way, deinterlacing might help, or encoding with -I 1 in some rare cases -I 2 helped. 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 Sleepycat Software Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver higher performing products faster, at low TCO. http://www.sleepycat.com/telcomwpreg.php?From=osdnemail3 _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
