My WDTV Live originally had problems with color matrices. I don't remember exactly what the problems were but I know that an HD video which alternated between rec.601 and rec.709 played back with only one matrix -- so the video would change colors as it played. I think played all videos as rec.106. It was fixed with a firmware update.
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Anonymous344Guest
I'm using two-pass encoding because I need to fit a flm onto a BD-25. Here is my command-line so far.
Code:"x264.exe" --pass 1 --bitrate 30000 --bluray-compat --level 4.1 --preset slow --keyint 24 --sar 1:1 --slices 4 --vbv-bufsize 30000 --vbv-maxrate 40000 --b-pyramid none --weightp 0 --colorprim bt709 --transfer bt709 --colormatrix bt709 --merange 24 --deblock -1:-1 --qcomp 0.8 --aq-strength 0.8 --stats ".stats" --output NUL "input.avs" "x264.exe" --pass 2 --bitrate 30000 --bluray-compat --level 4.1 --preset slow --keyint 24 --sar 1:1 --slices 4 --vbv-bufsize 30000 --vbv-maxrate 40000 --b-pyramid none --weightp 0 --colorprim bt709 --transfer bt709 --colormatrix bt709 --merange 24 --deblock -1:-1 --qcomp 0.8 --aq-strength 0.8 --stats ".stats" --output "output.264" "input.avs"
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Are you sure ? Fast first pass is default. You need to explictly use --slow-firstpass or --preset placebo to make it use slower settings
It's normal to begin encoding slowly (as it begins it's lookahead), then speed up a bit -
Anonymous344Guest
Thanks for helping, PDR, but I don't understand the reply. At the moment, my first pass is a copy of the second, which I configured to my liking. I need to know what I can remove from the first-pass portion of the command-line, so that it becomes a fast pass.
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Sorry I though you meant it's encoding as slowly as the 1st pass . It's fine the way it is (it's already a "fast" pass)
When you use --pass 1 , the "fast" settings are applied unless you explicity use --slow-firstpass or --preset placebo
http://mewiki.project357.com/wiki/X264_Settings#slow-firstpass -
Anonymous344Guest
So it's a fast pass even with --preset slow? The thing is that I usually use CRF encoding and haven't configured a first pass via the command-line before.
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Yes. --pass 1 automatically adds those options in the link to the end of the command line
http://mewiki.project357.com/wiki/X264_Settings#slow-firstpass
Using --pass 1 applies the following settings at the end of parsing the command line:
- --ref 1
- --no-8x8dct
- --partitions i4x4 (if originally enabled, else none)
- --me dia
- --subme MIN( 2, subme )
- --trellis 0
Note: --preset placebo enables --slow-firstpass.
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Anonymous344Guest
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