Newest 'libx264' Questions - Stack Overflow

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• FFMPEG bluray compliant 1080p encoding

  26 septembre 2022, par Ben Gnomino

  I'm trying to encode (with ffmpeg) bluray compliant h264 files to use with adobe encore cs6. Encore reads the m2ts file correctly and says no transcoding needed, but when I try to build the bdmv folder I get "video buffer underflows. total bitrate is too high near time..."

  "%execpath%" -hide_banner -c:v h264_cuvid -hwaccel_output_format cuda -i "%~1" -c:v h264_nvenc -preset medium -profile:v high -level:v 4.1 -b:v 25M -maxrate:v 38M -bufsize:v 30M -bf 3 -bt 1.0 -rc vbr -qmin 0 -qmax 69 -refs:v 4 -rc-lookahead 24 -flags +pass2+cgop -coder:v cabac -g 24 -keyint_min 1 -r 24000/1001 -bluray-compat 1 "%~p1%~n1.m2ts"
  

  Using libx264 makes no difference. Instead same settings using x264.exe generates a perfectly working file (for encore).

• How is the FFMPEG x264 result bitrate calculated ?

  12 septembre 2022, par secondplace

  When encoding in x264 (libx264) there is a listing at the end showing different encoding stats. I noticed that the Bitrate is too high. I was wondering how this can be.

  Here is an example:

  frame=177719 fps= 24 q=-1.0 Lsize= 4768888kB time=02:03:35.74 bitrate=5268.1kbits/s dup=0 drop=43 speed=1.01x
  video:4186558kB audio:579355kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.062419%
  

  From the first two result lines I can grab the stream size and stream duration. From that i can calculate the overall bitrate

  (4186558 * 8) / 7415.744 = 4516.39970311812
  

  However the last FFMPEG output shows an additional 108.4kb/s:

  [libx264 @ 0000026e1011f440] kb/s:4624.79
  

  When I use MediaInfo to get the stream size and stream duration it's also a little different.

  (4192906.438 * 8) / 7415.742 = 4523.24952836817
  

  The manual calculations from FFMPEG and MediaInfo are close enough and not significantly different however where are the 100kb/s+ from FFMPEG results coming from?

  Edit:

  I just found out that using --parsespeed=1 in MediaInfo CLI will give more accurate results for Variable Bitrates. Default is 0.5.

• Ffmpeg c++ can't compile with libxh264

  10 septembre 2022, par Turgut

  I made a program that uses the source version of ffmpeg. I get the code from it's website and compile/configured it. The problem is I want to configure it with the libx264 flag so it looks like this:

  ./configure --enable-shared --enable-libx264 --enable-gpl
  

  Ffmpeg itself compiles with no errors, however when I try to compile my own code using make I get this error:

  /usr/bin/cmake -E cmake_link_script CMakeFiles/Renderer.dir/link.txt --verbose=1
  /usr/bin/c++ -O3 -DNDEBUG CMakeFiles/Renderer.dir/src/main.cpp.o CMakeFiles/Renderer.dir/src/Application.cpp.o CMakeFiles/Renderer.dir/src/opengl/OpenGLRenderer.cpp.o CMakeFiles/Renderer.dir/src/opengl/texture.cpp.o CMakeFiles/Renderer.dir/src/opengl/text_render.cpp.o CMakeFiles/Renderer.dir/src/opengl/image_render.cpp.o CMakeFiles/Renderer.dir/src/logging/Log.cpp.o CMakeFiles/Renderer.dir/src/utils/color_converter.cpp.o CMakeFiles/Renderer.dir/src/utils/maths.cpp.o CMakeFiles/Renderer.dir/src/utils/sys_util.cpp.o CMakeFiles/Renderer.dir/src/types/segment.cpp.o CMakeFiles/Renderer.dir/src/types/timeline.cpp.o CMakeFiles/Renderer.dir/src/coms/json_parser.cpp.o CMakeFiles/Renderer.dir/src/coms/socket.cpp.o CMakeFiles/Renderer.dir/src/video_io/video_encoder.cpp.o CMakeFiles/Renderer.dir/src/video_io/video_decode.cpp.o CMakeFiles/Renderer.dir/src/video_io/audio_mixer.cpp.o CMakeFiles/Renderer.dir/lib/glad/src/glad.c.o -o bin/Renderer  /usr/local/lib/libavformat.a /usr/local/lib/libavcodec.a /usr/local/lib/libswresample.a /usr/local/lib/libswscale.a /usr/local/lib/libavutil.a /usr/local/lib/libavdevice.a /usr/lib/x86_64-linux-gnu/libGL.so /usr/lib/x86_64-linux-gnu/libGLU.so /usr/lib/x86_64-linux-gnu/libfreetype.so lib/glfw/src/libglfw3.a lib/spdlog/libspdlog.a /usr/lib/x86_64-linux-gnu/libz.so /usr/lib/x86_64-linux-gnu/librt.a -lm -ldl /usr/lib/x86_64-linux-gnu/libX11.so 
  /usr/bin/ld: /usr/local/lib/libavcodec.a(libx264.o): in function `X264_frame':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:349: undefined reference to `x264_picture_init'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:518: undefined reference to `x264_encoder_encode'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:551: undefined reference to `x264_encoder_delayed_frames'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(libx264.o): in function `reconfig_encoder':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:297: undefined reference to `x264_encoder_reconfig'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:212: undefined reference to `x264_encoder_reconfig'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:224: undefined reference to `x264_encoder_reconfig'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:250: undefined reference to `x264_encoder_reconfig'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:217: undefined reference to `x264_encoder_reconfig'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(libx264.o):/home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:230: more undefined references to `x264_encoder_reconfig' follow
  /usr/bin/ld: /usr/local/lib/libavcodec.a(libx264.o): in function `X264_close':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:605: undefined reference to `x264_param_cleanup'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:609: undefined reference to `x264_encoder_close'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(libx264.o): in function `parse_opts':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:621: undefined reference to `x264_param_parse'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(libx264.o): in function `X264_init':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:699: undefined reference to `x264_param_default'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:704: undefined reference to `x264_param_default_preset'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:729: undefined reference to `x264_param_parse'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:763: undefined reference to `x264_param_parse'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:795: undefined reference to `x264_levels'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:820: undefined reference to `x264_param_parse'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:821: undefined reference to `x264_param_parse'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:822: undefined reference to `x264_param_parse'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:823: undefined reference to `x264_param_parse'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:883: undefined reference to `x264_param_apply_fastfirstpass'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:924: undefined reference to `x264_param_apply_profile'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:1012: undefined reference to `x264_param_parse'From the updated error it appears you're explicitly linking with /usr/local/lib/libavcodec.a etc. So the problem almost certainly lies with your CMakeLists.txt file(s). – 
  
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:1032: undefined reference to `x264_encoder_open_163'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:1041: undefined reference to `x264_encoder_headers'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/libx264.c:1072: undefined reference to `x264_encoder_maximum_delayed_frames'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode_h264.o): in function `vaapi_encode_h264_configure':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode_h264.c:1096: undefined reference to `vaQueryVendorString'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode_h265.o): in function `vaapi_encode_h265_get_encoder_caps':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode_h265.c:1176: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode_h265.c:1190: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_wait':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:157: undefined reference to `vaSyncBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:168: undefined reference to `vaSyncSurface'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:170: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:161: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_free_output_buffer':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2412: undefined reference to `vaDestroyBuffer'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_make_packed_header':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:60: undefined reference to `vaCreateBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:71: undefined reference to `vaCreateBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:64: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:75: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_make_param_buffer':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:101: undefined reference to `vaCreateBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:104: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_alloc_output_buffer':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2430: undefined reference to `vaCreateBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2435: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2447: undefined reference to `vaDestroyBuffer'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_issue':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:637: undefined reference to `vaDestroyBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:583: undefined reference to `vaBeginPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:592: undefined reference to `vaRenderPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:601: undefined reference to `vaEndPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:618: undefined reference to `vaDestroyBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:621: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:595: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:634: undefined reference to `vaEndPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:586: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:603: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_output':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:668: undefined reference to `vaMapBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:699: undefined reference to `vaUnmapBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:701: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:671: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:715: undefined reference to `vaUnmapBuffer'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_profile_entrypoint':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1381: undefined reference to `vaMaxNumProfiles'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1387: undefined reference to `vaQueryConfigProfiles'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1389: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1411: undefined reference to `vaProfileStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1441: undefined reference to `vaMaxNumEntrypoints'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1447: undefined reference to `vaQueryConfigEntrypoints'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1450: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1474: undefined reference to `vaEntrypointStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1499: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1503: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_init_rate_control':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1574: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1578: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_init_gop_structure':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1953: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1958: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1977: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1982: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_init_slice_structure':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2206: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2211: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_init_packed_headers':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2269: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2274: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_init_roi':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2377: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2382: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_init_quality':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2331: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2336: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `vaapi_encode_init_max_frame_size':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1902: undefined reference to `vaGetConfigAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:1908: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `ff_vaapi_encode_init':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2630: undefined reference to `vaCreateConfig'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2635: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2646: undefined reference to `vaCreateContext'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2653: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2727: undefined reference to `vaSyncBuffer'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_encode.o): in function `ff_vaapi_encode_close':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2762: undefined reference to `vaDestroyContext'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_encode.c:2767: undefined reference to `vaDestroyConfig'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `ff_vaapi_decode_destroy_buffers':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:133: undefined reference to `vaDestroyBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:143: undefined reference to `vaDestroyBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:146: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:136: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `vaapi_decode_make_config':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:468: undefined reference to `vaMaxNumProfiles'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:476: undefined reference to `vaQueryConfigProfiles'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:540: undefined reference to `vaCreateConfig'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `vaapi_decode_find_best_format':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:310: undefined reference to `vaQuerySurfaceAttributes'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:322: undefined reference to `vaQuerySurfaceAttributes'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `vaapi_decode_make_config':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:624: undefined reference to `vaDestroyConfig'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:479: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:544: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `vaapi_decode_find_best_format':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:325: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:313: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `ff_vaapi_decode_make_param_buffer':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:44: undefined reference to `vaCreateBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:47: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `ff_vaapi_decode_make_slice_buffer':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:90: undefined reference to `vaCreateBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:104: undefined reference to `vaCreateBuffer'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:95: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:109: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:112: undefined reference to `vaDestroyBuffer'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `ff_vaapi_decode_issue':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:163: undefined reference to `vaBeginPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:172: undefined reference to `vaRenderPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:181: undefined reference to `vaRenderPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:190: undefined reference to `vaEndPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:192: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:166: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:210: undefined reference to `vaEndPicture'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:212: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:175: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:184: undefined reference to `vaErrorStr'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `ff_vaapi_common_frame_params':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:650: undefined reference to `vaDestroyConfig'
  /usr/bin/ld: /usr/local/lib/libavcodec.a(vaapi_decode.o): in function `ff_vaapi_decode_uninit':
  /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:707: undefined reference to `vaDestroyContext'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:709: undefined reference to `vaErrorStr'
  /usr/bin/ld: /home/turgut/Desktop/CppProjects/videoo-render/lib/ffmpeg/libavcodec/vaapi_decode.c:715: undefined reference to `vaDestroyConfig'
  

  (The error is a bit longer but I think this is ample for now.)

  The thing is, this code also runs on the cloud and compiles just fine without the --enable-libx264 flags. And inside the cloud, it works just fine even with the libx264 flag. But when I follow the exact same steps as the cloud and try to compile it locally, it gives this error.

  Here are the steps I have followed:

  First I removed ffmpeg (It was a bit messy) using sudo apt-get --purge autoremove ffmpeg then I made sure its deleted by searching find / -name ffmpeg and manually deleting my findings. Then, I ran apt-get install -y libx264-dev, followed by ./configure --enable-shared --enable-libx264 --enable-gpl inside the directory where I have downloaded the source files. Then ran make and make install where ffmpeg source files are. I ran ldconfig so it can detect shared libs (This is how it works on the cloud) and finally ran make on my own codes directory and got the error mentioned.

  Here is my CMakeFile:

  cmake_minimum_required(VERSION 3.7)
  
  project(Renderer C CXX)
  set(CMAKE_CXX_STANDARD 14)
  
  SET( EXECUTABLE_OUTPUT_PATH ${dir}/bin )
  set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/bin )
  
  
  add_definitions(-DGL_SILENCE_DEPRECATION)
  add_definitions("-g -lglad -lGL -lGLU -lX11 -lvdpau -lz -lva -lavformat -lavcodec- -lswscale -lavutil -lavfiter -lswresample 
  -lavdevice -lpostproc  -loa -lz -lx264 -llzma -lbz2 -lrt -lx264 -pthread -lm  -lva-drm -lva-x11")
  
  list(APPEND SOURCES
      ...
  )
  
  find_path(AVCODEC_INCLUDE_DIR libavcodec/avcodec.h)
  find_library(AVCODEC_LIBRARY avcodec)
  
  find_path(AVFORMAT_INCLUDE_DIR libavformat/avformat.h)
  find_library(AVFORMAT_LIBRARY avformat)
  
  find_path(AVDEVICE_INCLUDE_DIR libavdevice/avdevice.h)
  find_library(AVDEVICE_LIBRARY avdevice)
  
  find_path(AVCODEC_INCLUDE_DIR libavcodec/avcodec.h)
  find_library(AVCODEC_LIBRARY avcodec)
  
  find_path(AVUTIL_INCLUDE_DIR libavutil/avutil.h)
  find_library(AVUTIL_LIBRARY avutil)
  
  find_path(SWRESAMPLE_INCLUDE_DIR libswresample/swresample.h)
  find_library(SWRESAMPLE_LIBRARY swresample)
  
  find_path(SWSCALE_INCLUDE_DIR libswscale/swscale.h)
  find_library(SWSCALE_LIBRARY swscale)
  
  set(THREADS_PREFER_PTHREAD_FLAG ON)
  
  add_executable(Renderer src/main.cpp src/Application.cpp src/Application.h ${SOURCES})
  
  target_link_libraries(Renderer PRIVATE Threads::Threads)
  
  list(APPEND EXTRA_LIBS
      "-lGL -lGLU -lX11 -lz -lva -lswresample -lx264 -shared -lvdpau -lva  -lm  -lva-drm -lva-x11"
  )
  
  target_include_directories(Renderer PRIVATE 
      ${AVFORMAT_INCLUDE_DIR} 
      ${AVCODEC_INCLUDE_DIR} 
      ${SWRESAMPLE_INCLUDE_DIR}
      ${SWSCALE_INCLUDE_DIR}
      ${AVUTIL_INCLUDE_DIR}
      ${AVDEVICE_INCLUDE_DIR} 
  )
  
  target_link_libraries(Renderer PRIVATE 
      ${AVFORMAT_LIBRARY} 
      ${AVCODEC_LIBRARY} 
      ${SWRESAMPLE_LIBRARY}
      ${SWSCALE_LIBRARY}
      ${AVUTIL_LIBRARY} 
      ${AVDEVICE_LIBRARY} 
  )
  
  

  Like I said, it works on the cloud just the way it is and everything works without the --enable-libx264 flag.

  How can I fix this? I'm on ubuntu 22+

• I B P frames order and relative time - ffmpeg recorded video not smooth (stuttering)

  8 septembre 2022, par Francesco

  I'm trying to understand why my recorded video is not smooth. I'm using a USB capture device and OBS/ffmpeg software. OBS Stats doesn't show any skipped/missed frames during recording.

  Using this command on the resulting file (H264, mkv)

  ffprobe -v quiet -pretty -print_format csv -show_entries "frame=coded_picture_number,pkt_pts,pkt_duration,pict_type," -select_streams v:0 test.mkv > output.csv
  

  I see an output like this one:

  frame,33,33,I,0
  frame,67,33,P,1
  frame,100,33,I,2
  frame,133,33,I,3
  frame,167,33,P,4
  frame,200,33,I,5
  frame,233,33,P,6
  frame,267,33,I,7
  frame,300,33,B,9
  frame,333,33,P,8
  frame,367,33,I,10
  frame,400,33,P,11
  frame,433,33,I,12
  frame,467,33,B,14
  frame,500,33,P,13
  frame,533,33,I,15
  frame,567,33,P,16
  frame,600,33,I,17
  frame,633,33,B,19
  frame,667,33,P,18
  frame,700,33,I,20
  frame,733,33,B,22
  frame,767,33,P,21
  frame,800,33,I,23
  frame,833,33,B,25
  frame,867,33,P,24
  frame,900,33,I,26
  frame,933,33,B,28
  frame,967,33,P,27
  frame,1000,33,I,29
  ...
  

  If I understood correclty the last number refers to presentation order and the second number is the video relative time. Frame number 9 (type B) is shown at 300 ms while frame number 8 (type P) is shown at 333 ms.

  Is it correct? If not, is this the stuttering source and is there a way for fixing the order?

• x264 : How to Correctly Use quant_offsets ?

  25 août 2022, par Eynnzerr

  Suppose I need to encode different regions with different QPs in one frame, i.e. RoI(regions of interest) encoding. I searched all over the internet and was only told that quant_offsets can meet my demand. However, none of them told me exactly how to use it, and I can't find any official documentation about it. I read the source code of x264 and did experiments, and find it only adds an offset to the qp decision x264 has made, rather than exactly set the qp value I want.

  Is there a possible way that I can have x264 encode these regions using the qp value I've explictly given instead of adding offsets based on what it decided on its own? Many thanks!