Please help :)

[elkey]

Well i've done something at low-res h264 encode.

I show you 2 frame that i think there's some troubles...

source

http://kent-blog.co.cc/f/1-s.png

my encode

http://kent-blog.co.cc/f/1-k.png

It's easy to see that at the lower-right hand side, there're some loss of details of my encode. Please help me to solve it :-<

// pardon me for my bad Eng ~~!

[chipzoller]

Help us help you by posting all your details...encoder used, command line/settings, decoder used, etc.

[elkey]

Help us help you by posting all your details...encoder used, command line/settings, decoder used, etc.

Uhm i used ffdshow decoder and x264 encoder, and this result occurs for several settings, for example (for this case):

//Pass 1 and pass 2 are the same generally.


x264.exe --profile high --level 4.1 --pass 1 --preset slower --bitrate 2310 --stats ".stats" --min-keyint 24 --thread-input --threads 6 --deblock -3:-3 --deadzone-inter 21 --deadzone-intra 11 --bframes 5 --b-adapt 2 --direct auto --b-bias 0 --scenecut 40 --keyint 250 --ref 6 --qcomp 0.6 --rc-lookahead 00 --aq-mode 1 --aq-strength 0.85 --merange 24 --me umh --subme 9 --mixed-refs --partitions all --trellis 2 --psy-rd 0.7:0.1 --ipratio 1.4 --pbratio 1.3 --no-fast-pskip

[CWR03]

You're always going to lose some detail when you re-encode, especially in dark areas, fog/smoke/fire, or where colors are solid but fade. Are you trying to get a no-loss encode?

[elkey]

You're always going to lose some detail when you re-encode, especially in dark areas, fog/smoke/fire, or where colors are solid but fade. Are you trying to get a no-loss encode?

My source is Bluray and it's not a re-encode (although I resize to a m-HD res). This problem also happened with the res of 720p.... Yep i'm trying to reduce as much as possible the losing of details. It's possible ?

[nurbs]

Your command line doesn't look right at all. There are a lot of things in there that are redundant (a lot of the settings are defaults) or don't make sense in general. Are you perhaps using an old version of megui (.1056) with sharktooths profiles?

[elkey]

Your command line doesn't look right at all. There are a lot of things in there that are redundant (a lot of the settings are defaults) or don't make sense in general. Are you perhaps using an old version of megui (.1056) with sharktooths profiles?

Well i used command line (a .bat - encoding) so that it's not anyone's profile. I used meGUI for my first encode but it had some troubles so that i stop using meGUI... Some of the settings are default b'coz i don't undertand carefully their affect or i can't use them effectively, i suppose.

After all i expect some explaning or some help in improve my command :cool:, as a newbie's experiment ^^!

[nurbs]

For starters this is exactly the same command line you use with all the redundant stuff (18 entries in total :eek:) removed:
x264.exe --level 4.1 --pass 1 --preset slower --bitrate 2310 --stats ".stats" --min-keyint 24 --deblock -3:-3 --bframes 5 --ref 6 --qcomp 0.6 --rc-lookahead 00 --aq-strength 0.85 --merange 24 --psy-rd 0.7:0.1 --no-fast-pskip
The default --min-keyint is 25 and 24 isn't gonna make any difference. --deblock -3:-3 is very low, especially for animated content. Don't ever touch --qcomp unless you know what you are doing. --rc-lookahead 00 makes no sense at all especially since mb-tree helps a lot, especially with animated content, and --no-fast-pskip doesn't help much either. Also --level 4.1 isn't guaranteed to work if you don't set vbv parameters or manually specify too many reference frames.
Therefore I'd further reduce that command line to:
x264.exe --level 4.1 --pass 1 --preset slower --bitrate 2310 --stats ".stats" --bframes 5 --ref 6 --aq-strength 0.85 --merange 24 --psy-rd 0.7:0.1

Furthermore I'd recommend you just do
x264.exe --level 4.1 --pass 1 --preset slower --bitrate 2310 --stats ".stats" --tune animation
for cartoons, or
x264.exe --level 4.1 --pass 1 --preset slower --bitrate 2310 --stats ".stats" --tune film
for movies or CGI that's supposed to look real and be done with it.

I'm not sure if the above pictures are better with --tune film or --tune animation, but they look to be more on the animation side of things.