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+-- Forum: Hybrid - Support (https://forum.selur.net/forum-1.html)
+--- Forum: Problems & Questions (https://forum.selur.net/forum-3.html)
+--- Thread: [HELP] how to encode AVS2 to H265 video? (/thread-4243.html)
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RE: how to encode AVS2 to H265 video? - ssdde - 26.10.2025
Perhaps they will never be included. Standards like libav and FFMPEG are American. To break free from U.S. standards and dependencies, China has developed its own set of coding standards—AVS3, AVS2, AVS+. And the U.S. intent on maintaining its monopoly over its own standards, will probably never incorporate China’s proprietary video codecs.
RE: how to encode AVS2 to H265 video? - Selur - 26.10.2025
Sure, it would be ideal to support everything, but there is a limit on time I can spend on this.
I adjusted the ffmpeg build to include:
- ibdavs2 AVS2-P2/IEEE1857.4 (codec avs2)
- libuavs3d AVS3-P2/IEEE1857.10 (codec avs3)
- cavs Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)
SOURCE_REPO_DAV1D=https://code.videolan.org/videolan/dav1d.git
SOURCE_REPO_DAVS=https://github.com/pkuvcl/davs2.git
SOURCE_REPO_UAVS3D=https://github.com/uavs3/uavs3d.git
ffmpeg can't decode more than those projects.
If you want more support in Hybrid through ffmpeg get those projects to support your content.
If there are other open source sources for these or other libraries that could be used. Let the folks over at https://github.com/m-ab-s/media-autobuild_suite know maybe they include them.
Cu Selur
RE: how to encode AVS2 to H265 video? - ssdde - 26.10.2025
thank you, i'm downloading Hybrid_dev_2025.10.25-192032.exe for using.
RE: how to encode AVS2 to H265 video? - Selur - 26.10.2025
side note: https://github.com/vapoursynth/bestsource/commit/cf06befad50204d97b1700cce69ad129f2b18f89
=> next BestSource release might support avs2&avs3 through libdavs2 and libuavs3d.
Cu Selur
RE: how to encode AVS2 to H265 video? - ssdde - 26.10.2025
indeed, it's great news, looking forward to it.
RE: how to encode AVS2 to H265 video? - ssdde - 27.10.2025
I learn that AVS3 encoding is used for 8K video, AVS2 encoding is used for 4K video, and AVS+ is used for satellite broadcasting, the 1080i video.
RE: how to encode AVS2 to H265 video? - Selur - 27.10.2025
BestSource released a new version (R14), at least here it decodes the sources from https://github.com/xatabhk/avs2-avs3-video-samples.
Cu Selur
Ps.: Uploaded a new dev which includes the file, but you can simply replace the BestSource.dll with the one from the release.