X265

[jakkor]

It works when I added
ffmpeg -i "paranoia.avs" -an -pix_fmt yuv420p -f yuv4mpegpipe "paranoia.y4m"
pause
x265 --crf 25 --preset fast -o "paranoia.265" "paranoia.y4m"
pause

but I don't know what this. I found this here
http://forum.videohelp.com/threads/3577 ... ngw-builds

[Qyot27]

It's because the rext stuff hasn't been fully fleshed out in the HEVC standard (or x265) yet, so you have to convert it to YV12. It'd also have worked if you added ConvertToYV12() to the end of the script.

[jakkor]

File y4m is very large about 100gb so have to have big free spece disk.

ffmpeg -i "red.avs" -an -pix_fmt yuv420p -f yuv4mpegpipe "red.y4m"

x265 --crf 25 --preset faster -o "red.265" "red.y4m"
ConvertToYV12()
is it good now?


How to join file x265 with audio aac?

[jakkor]

Of course in avisynth convertoyuv.

[Qyot27]

If you have ConvertToYV12() in the AviSynth script, there's no need to use -pix_fmt yuv420p when using ffmpeg. The fact that y4m is uncompressed is why I said that if it's longer than an AMV, use Trim() to run the test.

As it stands, muxing it together with audio is only possible with mp4box right now. L-SMASH's support for it is experimental and has been disabled until the extension to the 14496-15 3rd edition is ratified, and the work on getting it into Matroska is hinged upon both that ratification and the work DivX is doing on the patches to mkvtoolnix. That's why I said this is where the real problem is.

[jakkor]

I tried gdsmux part of haali. File x265 read but after 1,4% not muxing .

[Qyot27]

I repeat: As it stands, muxing it together with audio is only possible with mp4box right now.

Avoid MKV for HEVC for the time being (and furthermore, there is zero chance that Haali's muxer would work for HEVC, since the last update was June 23rd), because the files may not work in the future.

[Mol]

Bump, sorry for necro'. Is h.265 any better yet?

[mirkosp]

It got better but not worth it yet, imho.

[jakkor]

Hey
Since 09.03.2014 version ffmpeg included libx265 but crf doesn't work command line

ffmpeg.exe -i video.mkv -vcodec libx265 -preset veryslow -b:crf 24 video265.mp4

bitrate always too low about 400kb and doesnt deppend crf=20 crf=26 still bitrate and size the same