Following last week mails due to my poor results
Here is what I am aiming at for the telecine, from various inputs, mostly
Steven Schultz and Steven Boswell, thanks for their time and patience (they
should get an annual award of some sort)
I am using the default values (e.g nothing behind it).
however
1/ Reduced G to 10, q values where constantly "sky rocketing" after a
10~12
frames.
2/ Brought up a bit the -q to 3 instead of 1 then 2.
3/ -K Hi-res
4/ the usual -D 10 -R 0
5/ no yudenoise at all. Default values of yuvdenoise where blurring the
all
lot despite keeping q around 2 to 3 for -q 2
6/ y4mspatialfilter default values before mpeg2enc pipe
7/ boosted -r to 20
8/ set -b to 9000
I still have to test y4mdenoise properly, but values of -t 1 -z 1 seems far
too high. Need to learn more about its parameters.
With this values peak and average bit rate are 9000 and 8000 respectively
However I did downscale my big frames with
pnmtoy4m | yuvdenoise -r 16 -l 2 -F | y4mscaler -O option cubic | y4munsharp
The option cubic seems important when using a Bayer filter, otherwise some
pattern (Edge sens in my case) will ring a lot (see the y4mscaler page)
Next steps :
A/ include y4mdenoiser with proper values and learn the new yuvdenoise,
make
to compare both of them
B/ Modify yuvflip to make a yuvswap
C/ Use the new yuvmotion from Jerome
With ABC I will be able to avoid the DV stage hence very likely to improve
quality
Thanks a lot to all again
Cheers
E
-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
_______________________________________________
Mjpeg-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/mjpeg-users
