#5894: Wrong -auto-alt-ref option type
------------------------------------+--------------------------------------
             Reporter:  kagami      |                     Type:  defect
               Status:  new         |                 Priority:  normal
            Component:  avcodec     |                  Version:  git-master
             Keywords:  libvpx,vp9  |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+--------------------------------------
 libvpx API allows 0, 1 and 2 values for `enable_auto_alt_ref` option in
 case of VP9, see
 
[[https://chromium.googlesource.com/webm/libvpx/+/v1.6.0/vp9/vp9_cx_iface.c#257|vp9_cx_iface.c]].
 But ffmpeg uses `AV_OPT_TYPE_BOOL` for it, thus making impossible to
 enable `multi_arf_allowed` mode.

 {{{
 % ffmpeg -f lavfi -i testsrc -auto-alt-ref 2 -c:v libvpx-vp9 -frames:v 1
 -f null -
 ffmpeg version N-82014-gb22b4fb Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.4.0 (Gentoo 5.4.0 p1.0, pie-0.6.5)
   configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
 --docdir=/usr/share/doc/ffmpeg-9999/html --mandir=/usr/share/man --enable-
 shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++
 --ar=x86_64-pc-linux-gnu-ar --optflags='-march=corei7-avx -O2 -pipe
 -I/opt/cuda/include -I/opt/cuda/include -I/opt/cuda/include
 -I/opt/cuda/include' --disable-static --enable-avfilter --enable-
 avresample --disable-stripping --enable-cuda --enable-cuvid --enable-
 nonfree --enable-nonfree --disable-indev=v4l2 --disable-outdev=v4l2
 --disable-indev=oss --disable-indev=jack --disable-outdev=oss --enable-
 bzlib --disable-runtime-cpudetect --disable-debug --disable-gcrypt
 --disable-gnutls --disable-gmp --enable-gpl --enable-hardcoded-tables
 --enable-iconv --disable-lzma --enable-network --enable-openssl --enable-
 postproc --disable-libsmbclient --enable-ffplay --enable-sdl2 --disable-
 vaapi --enable-vdpau --enable-xlib --enable-libxcb --enable-libxcb-shm
 --enable-libxcb-xfixes --enable-zlib --disable-libcdio --disable-
 libiec61883 --disable-libdc1394 --disable-libcaca --disable-openal
 --enable-opengl --disable-libv4l2 --disable-libpulse --disable-
 libopencore-amrwb --disable-libopencore-amrnb --disable-libfdk-aac
 --disable-libopenjpeg --disable-libbluray --disable-libcelt --disable-
 libgme --disable-libgsm --disable-mmal --disable-libmodplug --enable-
 libopus --disable-libilbc --disable-librtmp --disable-libssh --disable-
 libschroedinger --disable-libspeex --enable-libvorbis --enable-libvpx
 --disable-libzvbi --disable-libbs2b --disable-chromaprint --disable-
 libebur128 --disable-libflite --disable-frei0r --disable-libfribidi
 --enable-fontconfig --disable-ladspa --enable-libass --enable-libfreetype
 --disable-librubberband --disable-libzimg --disable-libsoxr --enable-
 pthreads --disable-libvo-amrwbenc --enable-libmp3lame --disable-libkvazaar
 --disable-nvenc --disable-libopenh264 --disable-libsnappy --disable-
 libtheora --disable-libtwolame --disable-libwavpack --disable-libwebp
 --enable-libx264 --enable-libx265 --disable-libxvid --disable-amd3dnow
 --disable-amd3dnowext --disable-avx2 --disable-fma3 --disable-fma4
 --disable-xop --cpu=corei7-avx --disable-doc --disable-htmlpages --enable-
 manpages
   libavutil      55. 32.100 / 55. 32.100
   libavcodec     57. 61.103 / 57. 61.103
   libavformat    57. 52.100 / 57. 52.100
   libavdevice    57.  0.102 / 57.  0.102
   libavfilter     6. 64.100 /  6. 64.100
   libavresample   3.  0.  0 /  3.  0.  0
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  2.100 /  2.  2.100
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, lavfi, from 'testsrc':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240
 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
 [libvpx-vp9 encoder @ 0x17237a0] Unable to parse option value "2" as
 boolean
 [libvpx-vp9 encoder @ 0x17237a0] Error setting option auto-alt-ref to
 value 2.
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> vp9 (libvpx-vp9))
 Error while opening encoder for output stream #0:0 - maybe incorrect
 parameters such as bit_rate, rate, width or height
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5894>
FFmpeg <https://ffmpeg.org>
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