Vmaf

• !Requires FFmpeg with libvmaf enabled
• Added --vmaf option. Show vmaf for each encoded segment.
• Added --vmaf_path for custom vmaf models path.

Refactoring

• Changed all lookup, now faster and better.

Instant resume

• All data about total frame count and chunks are stored in done.txt file and encode can be resumed instantly.

Specify temp folder

• Added --temp option to specify custom temporally folder to use.