Ubuntu 20.04 compiling mpv ran into errors due to commit 13489c8

[luckysk]

Due to commit 13489c8, compiling mpv on Ubuntu 20.04 resulted in the following errors:

FAILED: libmpv.so.2.3.0.p/filters_f_lavfi.c.o 
ccache cc -Ilibmpv.so.2.3.0.p -I. -I.. -Icommon -Ietc -Iplayer/javascript -Iplayer/lua -Isub -I/home/rland/work/src/mpv-build/build_libs/include -I/usr/include/uuid -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/fribidi -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/x86_64-linux-gnu -I/usr/include/lua5.1 -I/usr/include/libdrm -fvisibility=hidden -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -std=c11 -O0 -g -D_FILE_OFFSET_BITS=64 -Wdisabled-optimization -Wempty-body -Wformat -Wimplicit-fallthrough -Wparentheses -Wpointer-arith -Wshadow -Wundef -Wvla -Wno-cast-function-type -Wno-format-zero-length -Wno-missing-field-initializers -Wno-sign-compare -Wno-switch -Wno-unused-parameter -fno-math-errno -fno-signed-zeros -fno-trapping-math -Werror=format-security -D_GNU_SOURCE -Wmissing-prototypes -Wstrict-prototypes -Werror=implicit-function-declaration -Wno-pointer-sign -fPIC -D_REENTRANT -pthread -DPL_HAVE_PTHREAD -DPTHREAD_HAS_SETCLOCK -DPL_STATIC -MD -MQ libmpv.so.2.3.0.p/filters_f_lavfi.c.o -MF libmpv.so.2.3.0.p/filters_f_lavfi.c.o.d -o libmpv.so.2.3.0.p/filters_f_lavfi.c.o -c ../filters/f_lavfi.c
In file included from /home/rland/work/src/mpv-build/build_libs/include/libplacebo/utils/libav_internal.h:45,
                 from /home/rland/work/src/mpv-build/build_libs/include/libplacebo/utils/libav.h:293,
                 from ../filters/f_lavfi.c:35:
/home/rland/work/src/mpv-build/build_libs/include/libavutil/hwcontext_vulkan.h:44:5: error: unknown type name 'VkVideoCodecOperationFlagBitsKHR'
   44 |     VkVideoCodecOperationFlagBitsKHR video_caps;
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[81/191] Compiling C object libmpv.so.2.3.0.p/demux_demux_mkv.c.o
FAILED: libmpv.so.2.3.0.p/demux_demux_mkv.c.o 
ccache cc -Ilibmpv.so.2.3.0.p -I. -I.. -Icommon -Ietc -Iplayer/javascript -Iplayer/lua -Isub -I/home/rland/work/src/mpv-build/build_libs/include -I/usr/include/uuid -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/fribidi -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/x86_64-linux-gnu -I/usr/include/lua5.1 -I/usr/include/libdrm -fvisibility=hidden -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -std=c11 -O0 -g -D_FILE_OFFSET_BITS=64 -Wdisabled-optimization -Wempty-body -Wformat -Wimplicit-fallthrough -Wparentheses -Wpointer-arith -Wshadow -Wundef -Wvla -Wno-cast-function-type -Wno-format-zero-length -Wno-missing-field-initializers -Wno-sign-compare -Wno-switch -Wno-unused-parameter -fno-math-errno -fno-signed-zeros -fno-trapping-math -Werror=format-security -D_GNU_SOURCE -Wmissing-prototypes -Wstrict-prototypes -Werror=implicit-function-declaration -Wno-pointer-sign -fPIC -D_REENTRANT -pthread -DPL_HAVE_PTHREAD -DPTHREAD_HAS_SETCLOCK -DPL_STATIC -MD -MQ libmpv.so.2.3.0.p/demux_demux_mkv.c.o -MF libmpv.so.2.3.0.p/demux_demux_mkv.c.o.d -o libmpv.so.2.3.0.p/demux_demux_mkv.c.o -c ../demux/demux_mkv.c
In file included from /home/rland/work/src/mpv-build/build_libs/include/libplacebo/utils/libav_internal.h:45,
                 from /home/rland/work/src/mpv-build/build_libs/include/libplacebo/utils/libav.h:293,
                 from ../demux/demux_mkv.c:40:
/home/rland/work/src/mpv-build/build_libs/include/libavutil/hwcontext_vulkan.h:44:5: error: unknown type name 'VkVideoCodecOperationFlagBitsKHR'
   44 |     VkVideoCodecOperationFlagBitsKHR video_caps;
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[82/191] Compiling C object libmpv.so.2.3.0.p/sub_osd.c.o
[83/191] Compiling C object libmpv.so.2.3.0.p/sub_draw_bmp.c.o
[84/191] Compiling C object libmpv.so.2.3.0.p/sub_sd_lavc.c.o
[85/191] Compiling C object libmpv.so.2.3.0.p/video_filter_vf_format.c.o
FAILED: libmpv.so.2.3.0.p/video_filter_vf_format.c.o 
ccache cc -Ilibmpv.so.2.3.0.p -I. -I.. -Icommon -Ietc -Iplayer/javascript -Iplayer/lua -Isub -I/home/rland/work/src/mpv-build/build_libs/include -I/usr/include/uuid -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/fribidi -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/x86_64-linux-gnu -I/usr/include/lua5.1 -I/usr/include/libdrm -fvisibility=hidden -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -std=c11 -O0 -g -D_FILE_OFFSET_BITS=64 -Wdisabled-optimization -Wempty-body -Wformat -Wimplicit-fallthrough -Wparentheses -Wpointer-arith -Wshadow -Wundef -Wvla -Wno-cast-function-type -Wno-format-zero-length -Wno-missing-field-initializers -Wno-sign-compare -Wno-switch -Wno-unused-parameter -fno-math-errno -fno-signed-zeros -fno-trapping-math -Werror=format-security -D_GNU_SOURCE -Wmissing-prototypes -Wstrict-prototypes -Werror=implicit-function-declaration -Wno-pointer-sign -fPIC -D_REENTRANT -pthread -DPL_HAVE_PTHREAD -DPTHREAD_HAS_SETCLOCK -DPL_STATIC -MD -MQ libmpv.so.2.3.0.p/video_filter_vf_format.c.o -MF libmpv.so.2.3.0.p/video_filter_vf_format.c.o.d -o libmpv.so.2.3.0.p/video_filter_vf_format.c.o -c ../video/filter/vf_format.c
In file included from /home/rland/work/src/mpv-build/build_libs/include/libplacebo/utils/libav_internal.h:45,
                 from /home/rland/work/src/mpv-build/build_libs/include/libplacebo/utils/libav.h:293,
                 from ../video/filter/vf_format.c:27:
/home/rland/work/src/mpv-build/build_libs/include/libavutil/hwcontext_vulkan.h:44:5: error: unknown type name 'VkVideoCodecOperationFlagBitsKHR'
   44 |     VkVideoCodecOperationFlagBitsKHR video_caps;

The version of Vulkan used by the Ubuntu 20.04 release is 1.2.131.2-1. From what I've found through Google, VkVideoCodecOperationFlagBitsKHR was introduced in version 1.2.175. I can't upgrade Vulkan directly.What's the best way to prevent this error?

[Lynne]

Its not a bug in FFmpeg. libplacebo has some issues with its configuration. There's a fix that's being worked on:
​https://code.videolan.org/videolan/libplacebo/-/merge_requests/670