B frames as references are not supported on gtx 1650 mobile using hevc

[Pranshu Tanwar]

Summary of the bug:
on a recent update of ffmpeg (i use arch btw) my hevc_nvenc started giving me this error, it used to work fine before this.

How to reproduce:
must have my gpu (gtx 1650) or a similar one

▶ ffmpeg -hwaccel cuda -i VID_20230407_200259.mp4 -c:v hevc_nvenc VID_new.mp4
ffmpeg version n6.0 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.1 (GCC) 20230201
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libjxl --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librav1e --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg --enable-nvdec --enable-nvenc --enable-opencl --enable-opengl --enable-shared --enable-version3 --enable-vulkan
  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
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20230407_200259.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2023-04-07T17:03:37.000000Z
    location        : +41.1137+029.0157/
    location-eng    : +41.1137+029.0157/
    com.android.version: 10
  Duration: 00:00:19.13, start: 0.000000, bitrate: 42224 kb/s
  Stream #0:0[0x1](eng): Video: hevc (Main) (hvc1 / 0x31637668), yuvj420p(pc, smpte170m), 3840x2160, 41960 kb/s, SAR 1:1 DAR 16:9, 29.80 fps, 30 tbr, 90k tbn (default)
    Metadata:
      creation_time   : 2023-04-07T17:03:37.000000Z
      handler_name    : VideoHandle
      vendor_id       : [0][0][0][0]
    Side data:
      displaymatrix: rotation of -90.00 degrees
  Stream #0:1[0x2](eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 95 kb/s (default)
    Metadata:
      creation_time   : 2023-04-07T17:03:37.000000Z
      handler_name    : SoundHandle
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (hevc (native) -> hevc (hevc_nvenc))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[hevc_nvenc @ 0x5653e40a7300] B frames as references are not supported
[hevc_nvenc @ 0x5653e40a7300] Provided device doesn't support required NVENC features
[1]    1587625 segmentation fault (core dumped)  ffmpeg -hwaccel cuda -i VID_20230407_200259.mp4 -c:v hevc_nvenc VID_new.mp4

[Balling]

That is because of fix in 9a245bdf5d7860b8bc5e5c21a105a075925b719a

That means it is a bug in the driver.

[nyanmisaka]

Fixed in ​http://git.videolan.org/?p=ffmpeg.git;a=commit;h=7a8560cb22dd9f5c54df71af3fef26db9a2a28b0

[Balling]

Replying to nyanmisaka:

Fixed in ​http://git.videolan.org/?p=ffmpeg.git;a=commit;h=7a8560cb22dd9f5c54df71af3fef26db9a2a28b0

Yes, I meant that commit.

[Balling]

Please try master. We only support master.

[Pranshu Tanwar]

problem still persists after driver updates

[Balling]

Replying to Pranshu Tanwar:

problem still persists after driver updates

No, you need to try this, our official binaries: ​https://github.com/BtbN/FFmpeg-Builds/releases/tag/latest

[Balling]

Please retest after ac7c265b33b52f914ebe05e581bbe9343eca1186

[Pranshu Tanwar]

Latest binaries from ffmpeg official builds work. will use them until arch updates

[Balling]

Fixed in 7a8560cb22dd9f5c54df71af3fef26db9a2a28b0