Hi Steve, * Steven M. Schultz on Tuesday, January 15, 2008 at 08:10:24 -0800 > > On Tue, 15 Jan 2008, Christian Ebert wrote: > >> Hm, I played around a bit with the demo and am not convinced. > > I've done a lot more than play around with the demo and I am > completely convinced ;) > >> Especially with bitrate around 4500 to get a 2h video on a singel >> layer dvd, I get lots of square pixels with noisy material. > > You're supposed to denoise first ...
On samples with /very/ noisy source material I just don't see the difference, it just slows down encoding; and I remember that sometimes I might have got /slightly/ better quality, pictures slightly clearer, but little jumps. I have pal-dv source material, in case it matters. I use 1.9.0rc1 mpeg2enc, or latest cvs. ffmpeg -i source.mov -an -f yuv4mpegpipe - \ | mpeg2enc -o target.m2v -f 8 -b 4500 -F 3 -g 3 -G 15 -q 2 -r 32 -4 1 -2 1 -K tmpgenc -D 10 As an aside lav2yuv doesn't work on my Mac, perhaps some mistake in my libquicktime build, I get [codecs] Warning: Could not find audio Decoder for fourcc twos [codecs] Warning: quicktime_decode_audio_stub called [codecs] Warning: Could not find video Decoder for fourcc dvcp [codecs] Warning: quicktime_decode_video_stub called >> Perhaps I haven't found the right tweakings, but so far mpeg2enc >> handles this much better. > > Not in my case - 4500 to 6000 with properly processed input looks > far superior with Bitvice. Must be blind then, it looks almost more "pixely" to me. I've tried both just as is, and with IntraDC set to 10 plus DVNC set to 10: hm, I still think mpeg2enc is at least equal. But I'll experiment some more. >> BTW. is there a way to get the Luma Correction (gamma2.2) from >> mjpegtools (I'm encoding QuickTime files edited with Final Cut)? >> So far I've almost been using mpeg2enc, where/in which docs should I look? > > I have no idea what that's about. Wasn't aware that any gamma > correction is required if the chain of processing is setup right. bitvice Users Guide, page 13/14. > If you're running FCP then you might also be interested in: Actually Final Cut Express HD only, does enough for me needs. > > http://www.mattias.nu/plugins/ Thanks for that link. > The temporal denoise filter ghosts too much in my opinion but the > spatial filter does an excellent job of reducing noise. And the > price is right - free ;) heh, I'll look into it. > if you have some money to spend then: nonono! > http://www.cgm-online.com/eiperle/cgm_e.html > > is worth looking at (I have an earlier version of those) I will. Thanks for all your input! c -- So dacht ich. Nächstens mehr. _HÖLDERLIN: H Y P E R I O N_ <http://www.blacktrash.org/> ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
