Converting 8bit to 10bit
I can't seem to find a topic for this so please excuse me if there already is a topic about this. Anyways, I want to convert my 1080P 8-bit MKV files to 10-bit and I don't know what settings/options need to be adjusted to convert an 8-bit MKV file to a 10-bit MKV file.
I currently use Handbrake and Ripbot264 and i'm quite new to encoding, but I understood a few things that I need to know except how to convert files from 8-bit to 10-bit. I could not find much info regarding this via Google so I hope any expert encoder could guide me how to convert my 8-bit files to 10-bit. Thanks in advance!
That's odd... Why do you have to convert them to 10-bit? It would be time-consuming unless it has to do with file size.
Yes, I want to reduce the file size.
You cannot encode to 10 bit with HandBrake (or at least not with the binaries they offer). It might be possible with RipBot, but I don't know how well it handles copying subtitles, fonts etc. Basically, you would only need to replace RipBot's 8bit x264 binary with a 10 bit binary.
You could do it manually, as it is not hard:
1. Download a 10 bit x264 binary from http://x264.nl
2. Encode: "x264-10bit.exe "source.mkv" "output.mkv" --preset medium --crf 23"
choices for preset (speed, though it also affects quality): ultrafast, superfast, veryfast, faster, fast, medium, slow, slower, veryslow, placebo
crf controls bitrate/quality. lower crf == higher bitrate == higher quality
3. then remux with mkvtoolnix (drag&drop both source.mkv and output.mkv and uncheck the original 8 bit track)
That's pretty much the most basic way. It can be refined further or batched, but this should be a good start. You might also want to consider downsizing to 720p (add "--vf resize:1280,720,1:1,both" to the x264 command line).
Note that any kind of lossy encoding means you will lose some quality, strictly speaking.
Ripbot copies subtitles and fonts perfectly, i've done some tests on it.
Anyways I've downloaded the 10 bit x264 binary but do I adjust the settings by opening the x264.exe file? My problem is that the x264.exe crashes when it starts up, unless you meant the command line on the program.
EDIT: Nevermind, I figured it out, thanks for your help.
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