Quote:
Originally Posted by sneaker_ger
Does it work with x265 output? You mentioned here that you encountered troubles. |
Yes, but...
1. I went back through the mux software I'd created when using the X265 stream and found a difference, with a fix to that I got a picture.
2. It played video then, but had serious "stuttering" issues with all of the examples I'd found. So I went through the entire set of CLI values and discovered that my player wouldn't playback smoothly unless the stream had open gops. I also found that I had to disable b-pyramid. That made no sense to me... but there it was. There were also several other tweaks I had to include to get smooth playback (see below)...
3. I couldn't use "--uhd-bd" because it would force settings that cause stutter. So I manually set it's other parameters
So now I'm at a point at which I'm using this line for recording (of course some things like bitrate can change):
ffmpeg.exe -probesize 100MB -i "\path\to\source.m2ts" -an -r 23.976
-pix_fmt yuv420p10le -f yuv4mpegpipe -strict -1 - | "x265.exe" -
--preset medium --input-depth 10 --output-depth 10 --vbv-bufsize
30000 --vbv-maxrate 35000 --level-idc 51 --bframes 3 --ref 3
--slices 4 --no-b-pyramid --repeat-headers --chromaloc 2 --aud
--hrd --min-keyint 1 --colorprim bt2020 --transfer smpte2084
--colormatrix bt2020nc --max-cll "1000,400" --master-display
"G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,1)"
--fps 23.976 --sar 1:1 --qpfile "\path\to\chapters.CHP" --keyint 24
--bitrate 34653 --y4m --output "output.hevc"
4. But... there is still an issue. I can encode (very slowly) with this line, then use TSMUXER and TSM2UHD to create a structure -- and the output plays back fine on my Sony standalone.
If though, I try to use that structure as input to another encode -- it starts stuttering again on the grandchild copy. That makes me suspicious of the "successful" encode. I think it may have something to do with the FFMPEG line -- because I don't have that problem if I use AVS2YUV the second time... (but I do lose 10 bit/HDR since AVISYNTH is 8 bit).
So I'm not 100% there yet. I'm hoping others will try different things, use TSM2UHD, and report back results on other players -- and maybe some of this will become clearer. Maybe they can also find something in this command line that needs changing too.
It sure would be easier if I had the spec.