X264 Late Start Encode Run (Old SD Anime)

This is the profile for the most recent experimental encode run on a semi-old standard definition Anime. Quality matters above all. Time taken to encode is not to be considered a barrier. Estimated target filesize: 40~80MB for 20~25mins. Development for the final settings is in progress.

Anime used: Love Hina Again EP1 (OP/ED included)

AviSynth and Resizing
SAR/DAR: 4:3
Source Resolution: 960x720
Target Resolution(if resize applicable): 640x480
Method: Spline64

Basic Settings:
Preset: Placebo
Tune: Animation
CRF: 24, 10bits, Autoguess Level

Performance:
Threads: 1
Threaded Input: Yes

Advanced:

Experiment Sample Reports:
Sample Used: --seek 14050 --frames 1000

Thread Test(ME24 LA60)	Size (KB)
6 Threads (Default)	1764
1 Thread	1746

Chroma M.E. Range(1Thread LA60)	Size (KB)
ME24	1746
ME64	1733

RC LookAhead(1Thread ME24)	MERange24
LA24	1746
LA40	1746
LA60	1746
LA64	1746
LA65	1747
LA100	1783
LA250	1788

Past Experiment Results:
1. Threads: 1 (over default 1.5*logical cores) - Produced a file 1MB smaller in size.
2. MERange: 64/24/16 produced sizes 824, 854, 868 respectively for 120frames.
3. RC LookAhead only affects above 64, by increasing the filesize. (Tested for ME24 and ME64)

Pending Experiments(Ultrafast Run):

Error Log:
Error 1: MErange is ignored on certain presets.
Error 2: Rate Control Look Ahead Frames is ineffective below 64.