I ask you, why use .aac if in HEVC H265 it is not a format accepted by 4K UHD (unlike .ac3)?
Thanks
Rephrase that please, what you said doesn't make sense.
Beiträge von Nicholas Flamy
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The only thing to add is that your latest build of FFmpeg and the latest version of Voukoder remain with an outdated version of AMF.
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I'm investigating this again.
Edit: Both AAC codecs get the option to override the cutoff frequency in the next release.
Woohoo!
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The place your FFmpeg (https://github.com/Vouk/voukoder-ffmpeg) gets AMF from (https://github.com/GPUOpen-LibrariesAndSDKs/AMF) says "Version 1.4.21: AMD Radeon Software Adrenalin Edition 21.10.1 (21.30.25.01) or newer. Added PSNR/SSIM score feedback, new QVBR rate control mode and LTR mode for encoders, added HDR support for HEVC encoder and color converter, new EncoderLatency sample app."
Your FFmpeg says that it is on the latest version of AMF but it clearly isn't. I downloaded your FFmpeg and it was clearly out of date. That's part of the problem.
They added Main10 on December 3rd, 2021. I'm looking through your FFmpeg Github workflows and if I can figure it out I'll make a PR.
It's strange, the static build I downloaded from https://github.com/Vouk/voukoder-ffmpeg/releases has ffmpeg-win64-static-release\include\AMF\ and all the files match the GitHub master branch https://github.com/GPUOpen-LibrariesAndSDKs/AMF but the FFmpeg still shows no main10 and errors out when attempting -profile main10 even though the exact same command in Jellyfin FFmpeg works. I think the FFmpeg build is somehow using an older version of AMF even though ffmpeg-win64-static-release\include\AMF\ has the latest files.
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One screenshot is running ./ffmpeg -i '.\Katy Perry - Teenage Dream - 04 - Firework.flac' -c:v copy -c:a libfdk_aac -vbr 4 KP-regular-vbr-4.m4a and the other is running ./ffmpeg -i '.\Katy Perry - Teenage Dream - 04 - Firework.flac' -c:v copy -c:a libfdk_aac -vbr 4 -cutoff 20000 KP-20k-vbr-4.m4a. In the screenshots, you can clearly see one has much lower levels above about 17KHz and that is the first command. The other has normal sound levels above 17KHz and that is with -cutoff 20000. I'll try and test these audio files with Voukoder and see if the cutoff applies or if it's a weird FFmpeg thing. I will get back to you in a second comment when I check.
Voukoder has the same cutoff applied by default. This could be useful: https://trac.ffmpeg.org/wiki/Encode/AAC#fdk_aac
So it's not just FFmpeg, it's the FDK AAC encoder.
Chapter 3.1 which is on page 23 of the FDK AAC docs explains something about the bandwidth and the API for it: https://github.com/mstorsjo/fdk-a…/aacEncoder.pdf
On this FFmpeg documentation page it lists cutoff as an option:
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This is what I get, I'm using Jellyfin FFmpeg 6.0.1-1 (but I think it's on 6.0 as well):
./ffmpeg -h encoder=hevc_amf
ffmpeg version 6.0.1-Jellyfin Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12-win32 (GCC)
configuration: --prefix=/opt/ffmpeg --arch=x86_64 --target-os=mingw32 --cross-prefix=x86_64-w64-mingw32- --pkg-config=pkg-config --pkg-config-flags=--static --extra-version=Jellyfin --disable-ffplay --disable-debug --disable-doc --disable-sdl2 --disable-ptx-compression --disable-w32threads --enable-pthreads --enable-shared --enable-lto --enable-gpl --enable-version3 --enable-schannel --enable-iconv --enable-libxml2 --enable-zlib --enable-lzma --enable-gmp --enable-chromaprint --enable-libfreetype --enable-libfribidi --enable-libfontconfig --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libopenmpt --enable-libwebp --enable-libvpx --enable-libzimg --enable-libx264 --enable-libx265 --enable-libsvtav1 --enable-libdav1d --enable-libfdk-aac --enable-opencl --enable-dxva2 --enable-d3d11va --enable-amf --enable-libvpl --enable-ffnvcodec --enable-cuda --enable-cuda-llvm --enable-cuvid --enable-nvdec --enable-nvenc
libavutil 58. 2.100 / 58. 2.100
libavcodec 60. 3.100 / 60. 3.100
libavformat 60. 3.100 / 60. 3.100
libavdevice 60. 1.100 / 60. 1.100
libavfilter 9. 3.100 / 9. 3.100
libswscale 7. 1.100 / 7. 1.100
libswresample 4. 10.100 / 4. 10.100
libpostproc 57. 1.100 / 57. 1.100
Encoder hevc_amf [AMD AMF HEVC encoder]:
General capabilities: dr1 delay hardware
Threading capabilities: none
Supported hardware devices: d3d11va d3d11va dxva2 dxva2
Supported pixel formats: nv12 yuv420p p010le bgra bgr0 d3d11 dxva2_vld
hevc_amf AVOptions:
-usage <int> E..V....... Encoder Usage (from 0 to 5) (default transcoding)
transcoding 0 E..V....... Transcoding, video editing
ultralowlatency 1 E..V....... Video game streaming
lowlatency 2 E..V....... Video collaboration, RDP
webcam 3 E..V....... Video conferencing
highquality 4 E..V....... High-quality encoding
llhighquality 5 E..V....... High-quality encoding (low latency)
-profile <int> E..V....... Profile (from 1 to 2) (default main)
main 1 E..V.......
main10 2 E..V.......
-profile_tier <int> E..V....... Profile Tier (from 0 to 1) (default main)
main 0 E..V.......
high 1 E..V.......
-level <int> E..V....... Profile Level (from 0 to 186) (default auto)
auto 0 E..V.......
1.0 30 E..V.......
2.0 60 E..V.......
2.1 63 E..V.......
3.0 90 E..V.......
3.1 93 E..V.......
4.0 120 E..V.......
4.1 123 E..V.......
5.0 150 E..V.......
5.1 153 E..V.......
5.2 156 E..V.......
6.0 180 E..V.......
6.1 183 E..V.......
6.2 186 E..V.......
-quality <int> E..V....... Quality Preset (from 0 to 10) (default speed)
speed 10 E..V....... Prefer Speed
balanced 5 E..V....... Balanced
quality 0 E..V....... Prefer Quality
-rc <int> E..V....... Rate Control Method (from -1 to 3) (default -1)
cqp 0 E..V....... Constant Quantization Parameter
cbr 3 E..V....... Constant Bitrate
vbr_peak 2 E..V....... Peak Contrained Variable Bitrate
vbr_latency 1 E..V....... Latency Constrained Variable Bitrate
-header_insertion_mode <int> E..V....... Set header insertion mode (from 0 to 2) (default none)
none 0 E..V.......
gop 1 E..V.......
idr 2 E..V.......
-gops_per_idr <int> E..V....... GOPs per IDR 0-no IDR will be inserted (from 0 to INT_MAX) (default 1)
-preanalysis <boolean> E..V....... Enable Pre-Encode/Analysis for rate rontrol (2-Pass) (default false)
-vbaq <boolean> E..V....... Enable VBAQ (default false)
-hmqb <boolean> E..V....... Enable High Motion Quality Boost (default false)
-enforce_hrd <boolean> E..V....... Enforce HRD (default false)
-filler_data <boolean> E..V....... Filler Data Enable (default false)
-max_au_size <int> E..V....... Maximum Access Unit Size for rate control (in bits) (from 0 to INT_MAX) (default 0)
-min_qp_i <int> E..V....... Min Quantization Parameter for I-frame (from -1 to 51) (default -1)
-max_qp_i <int> E..V....... Max Quantization Parameter for I-frame (from -1 to 51) (default -1)
-min_qp_p <int> E..V....... Min Quantization Parameter for P-frame (from -1 to 51) (default -1)
-max_qp_p <int> E..V....... Max Quantization Parameter for P-frame (from -1 to 51) (default -1)
-qp_p <int> E..V....... Quantization Parameter for P-frame (from -1 to 51) (default -1)
-qp_i <int> E..V....... Quantization Parameter for I-frame (from -1 to 51) (default -1)
-skip_frame <boolean> E..V....... Rate Control Based Frame Skip (default false)
-me_half_pel <boolean> E..V....... Enable ME Half Pixel (default true)
-me_quarter_pel <boolean> E..V....... Enable ME Quarter Pixel (default true)
-aud <boolean> E..V....... Inserts AU Delimiter NAL unit (default false)
-log_to_dbg <boolean> E..V....... Enable AMF logging to debug output (default false)It seems your AMF is outdated.
https://github.com/Vouk/voukoder-ffmpeg
I don't know why but it doesn't have some of the options normal FFmpeg has had for at least a year. -
AMD HEVC encoder is missing the Main10 profile which is for 10 bit but for some reason (complicated and convoluted but it's on the internet) Main10 is more efficient, even for 8 bit, when encoding.
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Could we get an audio cutoff setting like in FFmpeg? That would solve the issue with the audio above 17KHz getting cut off. By default libfdk_aac applies a low pass filter but the ffmpeg command paramete "-cutoff 20000" sets the low pass filter to 20KHz (which is the max, if set higher I will error and tell you 20KHz is max.)
