Hi - On Thu, 8 Sep 2005, Jonathan Woithe wrote:
> times of high motion. ffmpeg's DV codec is better (in that the effect is > much reduced) but there are still issues. The visibility of the problem does > depend on the DVD player used: on some it's bearly visible, on others it's > painfully obvious. That is really strange - I can easily believe there are issues with the DV encoders (and that ffmpeg's is better) - but I can't seem to come up with a "how" that would cause a player dependent problem when viewing the final product. Any ideas/theories about that? > Note the libdv *decoder* is fine - the problem only affects the encoder. ffmpeg's is better - I might still have the notes (should be in the mailinglist archive from a few years ago) showing a marked average bitrate drop in the final .m2v file when switching to ffmpeg's DV decoder. > If this is the root cause of your problem then it's a libdv issue and has > nothing at all to do with mjpegtools. My money is on the highbitrate on recordable media :-) > My observations are that this libdv issue is unlikely to be addressed > anytime soon since it seems the developers don't have the time to track the Indeed. libdv hasn't seen much development in a couple years. > yet), and encode straight to MPEG2 that way. Going via an intermediate > uncompressed yuv4mpeg2 file isn't an option unfortunately due to a lack of > hard disc capacity. like this? :) -rw-r--r-- 1 sms sms 153813254078 Sep 6 01:26 lald.mov 8bit 4:2:2 uncompressed (the original 10bit 4:2:2 file is about 25% and is on another array that's spun down at the moment - the filters, and initial processing was done in 10bit mode then a 8bit version was exported for final processing and encoding). A 1TB array is (relatively) cheap these days - $850 for a 1394a (also has 1394a connectors). Check out the LaCie products at http://www.lacie.com. Cheers, Steven Schultz ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users