[FFmpeg-trac] #7301(undetermined:new): h264_nvenc / b_ref_mode each is not working

[FFmpeg]

#7301: h264_nvenc / b_ref_mode each is not working
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  smallishzulu                       |                 Priority:  normal
               Status:  new          |                  Version:
            Component:               |  unspecified
  undetermined                       |               Blocked By:
             Keywords:               |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Hi,

 b_ref_mode each option is not working by saying out:
 Each B frame as reference is not supported

 GPU is: GeForce GTX 1080 (Pascal based)

 Can there be a link or explanation given for supported cards ?

 'udp://192.168.2.100:5000?pkt_size=188'
 ffmpeg version N-91062-gf995aa8 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
   configuration: --prefix=/opt/ffmpeg --enable-nonfree --enable-gpl
 --extra-cflags='-I/opt/ffmpeg/include -I/usr/local/include
 -I/usr/local/cuda/include -I/opt/ndi/sdk/include' --extra-
 ldflags='-L/opt/ffmpeg/lib -L/usr/local/cuda/lib64 -L/opt/ndi/sdk/lib'
 --bindir=/opt/ffmpeg/bin --extra-libs=-ldl --enable-libx264 --enable-
 libx265 --enable-nonfree --enable-gpl --enable-nvenc --enable-libzvbi
 --enable-libfdk-aac --enable-libzimg --enable-libzmq --enable-libfreetype
 --enable-static --enable-shared --enable-hardcoded-tables --enable-vdpau
 --enable-cuda --enable-cuvid --enable-libvpx --enable-libmp3lame --enable-
 libndi_newtek --enable-openssl --enable-ffnvcodec --enable-libfontconfig
 --enable-libfribidi --enable-cuda-sdk --enable-libnpp
   libavutil      56. 18.102 / 56. 18.102
   libavcodec     58. 19.101 / 58. 19.101
   libavformat    58. 13.102 / 58. 13.102
   libavdevice    58.  4.100 / 58.  4.100
   libavfilter     7. 22.100 /  7. 22.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 [h264 @ 0xd8c740] Reinit context to 1280x720, pix_fmt: yuv420p
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/admintv/big-buck-
 bunny_294_1280x720.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: mp41
     creation_time   : 1970-01-01T00:00:00.000000Z
     title           : Big Buck Bunny
     encoder         : Lavf52.13.0
   Duration: 00:09:56.46, start: 0.000000, bitrate: 2353 kb/s
     Stream #0:0(und): Video: h264 (Constrained Baseline), 1 reference
 frame (avc1 / 0x31637661), yuv420p(left), 1280x720 [SAR 1:1 DAR 16:9],
 2220 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc (default)
     Metadata:
       creation_time   : 1970-01-01T00:00:00.000000Z
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 127 kb/s (default)
     Metadata:
       creation_time   : 1970-01-01T00:00:00.000000Z
       handler_name    : SoundHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc))
   Stream #0:1 -> #0:1 (aac (native) -> aac (native))
 Press [q] to stop, [?] for help
 [h264 @ 0xdfa740] Reinit context to 1280x720, pix_fmt: yuv420p
 [graph_1_in_0_1 @ 0x10f08c0] tb:1/48000 samplefmt:fltp samplerate:48000
 chlayout:0x3
 [graph 0 input from stream 0:0 @ 0x170fb80] w:1280 h:720 pixfmt:yuv420p
 tb:1/24 fr:24/1 sar:1/1 sws_param:flags=2
 [scaler_out_0_0 @ 0x1710e80] w:720 h:576 flags:'bicubic' interl:0
 [scaler_out_0_0 @ 0x1710e80] w:1280 h:720 fmt:yuv420p sar:1/1 -> w:720
 h:576 fmt:yuv420p sar:64/45 flags:0x4
 [h264_nvenc @ 0xdb3800] Loaded Nvenc version 8.1
 [h264_nvenc @ 0xdb3800] Nvenc initialized successfully
 [h264_nvenc @ 0xdb3800] 1 CUDA capable devices found
 [h264_nvenc @ 0xdb3800] [ GPU #0 - < GeForce GTX 1080 > has Compute SM 6.1
 ]
 [h264_nvenc @ 0xdb3800] Each B frame as reference is not supported
 [h264_nvenc @ 0xdb3800] No NVENC capable devices found
 [h264_nvenc @ 0xdb3800] Nvenc unloaded
 Error initializing output stream 0:0 -- Error while opening encoder for
 output stream #0:0 - maybe incorrect parameters such as bit_rate, rate,
 width or height
 [aac @ 0xdb6200] Qavg: 188.848
 [aac @ 0xdb6200] 2 frames left in the queue on closing
 Conversion failed!

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7301>
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