Selur's Little Message Board

i have a 4K 2160p AVS2 file, and want to encode it to H265,  i choose NVenc mode, because it's fast for test. and "Filtering" choose "no XSynth", but when click the Hybrid Start Queue button, it crashed.

attachment is the debug file.

please help, thank.

Hybrid uses:
Which fails with due with:
this indicates something is wrong with the decoding.

Do you see any errors wahn calling
inside a Windows command prompt?

Cu Selur

yes, seems there are some errors, how to fix?


Microsoft Windows [版本 10.0.17763.678]
© 2018 Microsoft Corporation。保留所有权利。

C:\Users\x>"C:\Program Files\Hybrid\64bit\ffmpeg.exe" -y -noautorotate -nostdin -threads 8 -r 50/1 -analyzeduration 200M -probesize 200M -i "D:\P2\2025山东卫视中秋晚会 SDTV.2025.Shandong.TV.Mid-Autumn.Festival.Gala.20251007.HDTV.2160p.AC3.AVS2.TPTV TS 14.43G\2025山东卫视中秋晚会_山东卫视-AVS2_10_06_19_28.ts" -map 0:0 -an -sn -pix_fmt yuv420p10le -strict -1 -fps_mode auto -r 50/1 -f yuv4mpegpipe NUL
ffmpeg version N-121473-gdc39a576ad Copyright © 2000-2025 the FFmpeg developers
  built with gcc 15.2.0 (Rev8, Built by MSYS2 project)
  configuration:  --pkg-config=pkgconf --cc='ccache gcc' --cxx='ccache g++' --ld='ccache g++' --extra-cxxflags=-fpermissive --extra-cflags=-Wno-int-conversion --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-zlib --enable-sdl2 --enable-ffnvcodec --enable-nvdec --enable-cuda-llvm --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libdav1d --enable-libaom --disable-debug --enable-fontconfig --enable-libass --enable-libbluray --enable-libfreetype --enable-libharfbuzz --enable-libmfx --enable-libmysofa --enable-libopenjpeg --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libopenmpt --enable-librav1e --enable-libsrt --enable-libgsm --enable-libvmaf --enable-libsvtav1 --enable-libglslang --enable-vulkan --enable-libuavs3d --enable-liboapv --extra-cflags=-DLIBTWOLAME_STATIC --extra-cflags=-DLIBXML_STATIC --extra-libs=-liconv --disable-w32threads
  libavutil      60. 13.100 / 60. 13.100
  libavcodec    62. 16.100 / 62. 16.100
  libavformat    62.  6.101 / 62.  6.101
  libavdevice    62.  2.100 / 62.  2.100
  libavfilter    11.  9.100 / 11.  9.100
  libswscale      9.  3.100 /  9.  3.100
  libswresample  6.  2.100 /  6.  2.100
Input #0, mpegts, from 'D:\P2\2025山东卫视中秋晚会 SDTV.2025.Shandong.TV.Mid-Autumn.Festival.Gala.20251007.HDTV.2160p.AC3.AVS2.TPTV TS 14.43G\2025山东卫视中秋晚会_山东卫视-AVS2_10_06_19_28.ts':
  Duration: 01:18:47.99, start: 1.400000, bitrate: 26218 kb/s
  Program 1
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
  Stream #0:0[0x100]: Video: avs2 (AVSV / 0x56535641), none, 3840x2160, 50 fps, 50 tbr, 90k tbn, start 2.052533
  Stream #0:1[0x101]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s, start 1.400000
[vist#0:0/avs2 @ 00000213f464ed40] Decoding requested, but no decoder found for: avs2
Error opening output file NUL.
Error opening output files: Invalid argument

C:\Users\x>

indicates that the avs2 decoder is missing.
Assuming you did update to the dev when I told you the second time, this is strange, since for me calling 'ffmpeg -decoders' on the ffmpeg version which comes with that dev version I see:
so avs2 should be supported through the in ffmpeg binary included libdavs2.
=>

1. make sure you use the latest dev, update if not
   
2. if that does not work call:
   
   Code:

   "C:\Program Files\Hybrid\64bit\ffmpeg.exe" -decoders
   and check that the above-mentioned decoders are listed.
   

Cu Selur

i download from your google dirve the latest Hybrid_dev_2025.10.24-214637.exe, still crash when start, i selected "no Xsynth" already.

attachment debug file

Can't see a crash in the debug output,..
it starts with:
after that is does not seem to crash, but just output empty data,...
seems like ffmpeg doesn't support 10bit avs2 ¯\_(ツ)_/¯

There seem to be custom builds of ffmpeg which support this, see: https://github.com/xatabhk/FFmpeg-avs2-avs3/releases
but those are not part of libdavs2 atm.
Nothing I can do about that, but you can probably simply replace the existing ffmpeg version with one from that github repository. (I did not test this, this is just an assumption,... and I don't know whether this will break decoding of something else through ffmpeg.)

Cu Selur

it's too hard for me. i wish you could make a version that support AVS3 AVS2 both encode to H265 successfully. 

besides AVS3 AVS2, is it possible to convert AVS+ encoded video to H265 using Hybrid?

Quote:besides AVS3 AVS2, is it possible to convert AVS+ encoded video to H265 using Hybrid?

Maybe, not sure whether Hybrid will misidentify the raw streams as Avisynth scripts.
If not, it should simply work by replacing the ffmpeg binary.

Quote:besides AVS3 AVS2, is it possible to convert AVS+ encoded video to H265 using Hybrid?

with the right ffmpeg version Hybrid should be able to handle the files while 'No XSynth' is used.
Vapoursynth&Avisynth will still not open avs+, avs2, avs3 files unless a source filter supports them, which none of them do atm.

The ffmpeg version I added to the dev version works fine with the current samples from https://github.com/xatabhk/avs2-avs3-video-samples.
=> so it supports the official avs1, avs2, avs3 decoders of ffmpeg.

If you can't manage to replace one ffmpeg.exe with another, don't expect me to spend hours trying to compile stuff, just for you to come around the corner with another file format. This started with you asking for avs3 support, then it was avs2 support, then it was avs2 with high bit depth and not it is avs+ (which seems to be high bit depth avs1).
=> Sorry, but I do not have the time or motivation to blindly test around, since I don't really use any of these myself.

https://github.com/GyanD/codexffmpeg/issues/202 sounds like https://www.gyan.dev/ffmpeg/builds/ might offer a ffmpeg version which support 10bit for avs2 in a few days.


Cu Selur

yes, I hope we can eventually support all of them—AVS3, AVS2, and AVS+. Wouldn't it be better to have full support across the board?

More and more videos on the web are now using these three codecs, and I'm looking for a simple and practical way to convert them into the more widely compatible H.265 format. Thanks.

Hybrid will automatically support them, in case they make it into libav.

Cu Selur