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• Using Video Recordings in Vuforia ARCamera

  2 juillet 2023, par Chengyuan Qian

  I am trying to test Vuforia on some pre-recorded videos in a Unity project. However, I found that I can only use videos recorded by the Vuforia SessionRecorder. When I use video recorded by other apps or devices, even though its resolution, frame rate and encoding type are all the same as the Vuforia's sample recordings, I still get the following error,

  


  Failed to start Vuforia
UnityEngine.Debug:LogError (object)
Vuforia.Internal.Utility.UnityLogger:LogError (string)
Vuforia.Internal.Utility.Log:Error (string)
Vuforia.Internal.Core.Engine:Start (System.Action)
Vuforia.Internal.Core.Engine:Start ()
Vuforia.VuforiaBehaviour:VuforiaInitialized (Vuforia.VuforiaInitError)
System.Delegate:DynamicInvoke (object[])
Vuforia.Utility.ExtensionMethods.DelegateHelper:InvokeDelegate (System.Delegate,object[])
Vuforia.Utility.ExtensionMethods.DelegateHelper:InvokeWithExceptionHandling (System.Action`1,Vuforia.VuforiaInitError)
Vuforia.Internal.Core.Engine:add_OnAfterVuforiaInitializedPublic (System.Action`1)
Vuforia.VuforiaBehaviour:Awake ()



  


  In addition to make sure the resolution, frame rate and encoding type the same, I used ffmpeg to check the metadata of Vuforia SessionRecorder's recordings and my own recordings, but I have no idea which property makes the difference. Below are the metadata of the two videos,

  


  

  • Vuforia SessionRecorder's recording

  


  


  ffprobe version 2023-06-27-git-9b6d191a66-full_build-www.gyan.dev Copyright (c) 2007-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      58. 13.101 / 58. 13.101
  libavcodec     60. 21.100 / 60. 21.100
  libavformat    60.  9.100 / 60.  9.100
  libavdevice    60.  2.100 / 60.  2.100
  libavfilter     9.  8.102 /  9.  8.102
  libswscale      7.  3.100 /  7.  3.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\VuforiaSession-20230701-110737.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isom
    creation_time   : 2023-07-01T16:07:37.000000Z
    title           : VuforiaSession-20230701-110737
    encoder         : Vuforia Engine
  Duration: 00:00:03.81, start: 0.000000, bitrate: 15467 kb/s
  Stream #0:0[0x1](und): Data: none (mp4s / 0x7334706D), 28 kb/s (default)
    Metadata:
      creation_time   : 2023-07-01T16:07:37.000000Z
  Stream #0:1[0x2](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 15428 kb/s, 29.94 fps, 60 tbr, 1000k tbn (default)
    Metadata:
      creation_time   : 2023-07-01T16:07:37.000000Z
      vendor_id       : [0][0][0][0]
      encoder         : JVT/AVC Coding
Unsupported codec with id 0 for input stream 0


  


  

  • My own recording

  


  


  ffprobe version 2023-06-27-git-9b6d191a66-full_build-www.gyan.dev Copyright (c) 2007-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      58. 13.101 / 58. 13.101
  libavcodec     60. 21.100 / 60. 21.100
  libavformat    60.  9.100 / 60.  9.100
  libavdevice    60.  2.100 / 60.  2.100
  libavfilter     9.  8.102 /  9.  8.102
  libswscale      7.  3.100 /  7.  3.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\output.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : clideo.com
    encoder         : Lavf60.9.100
  Duration: 00:00:02.60, start: 0.000000, bitrate: 4898 kb/s
  Stream #0:0[0x1](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 269 kb/s (default)
    Metadata:
      handler_name    : SoundHandle
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt470bg/bt470bg/smpte170m, progressive), 1280x720 [SAR 1:1 DAR 16:9], 4620 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]


  


  Anyone with any ideas about how to use non-Vuforia-recorded video will be greatly appreciated.

  


• lavu/hwcontext_qsv : use mfxImplDescription instead of mfxExtendedDeviceId on Linux

  27 novembre 2023, par Haihao Xiang

  lavu/hwcontext_qsv : use mfxImplDescription instead of mfxExtendedDeviceId on Linux
  mfxExtendedDeviceId mightn't be supported in certain configurations of
  
  oneVPL on Linux, so we can't ensure a property filter for
  
  mfxExtendedDeviceId.DeviceID or mfxExtendedDeviceId.VendorID works as
  
  expected. This fixed the issue mentioned in [1]
  [1] http://ffmpeg.org/pipermail/ffmpeg-user/2023-October/056983.html
  Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
  

  • [DH] libavutil/hwcontext_qsv.c

• Stream map 'data-re' matches no streams

  15 septembre 2023, par DreamSky007

  C :\Users\pengp>ffmpeg -ss 5 -i Flight.mpg -map data-re -codec copy -f data - > out.klv
ffmpeg version 2023-09-07-git-9c9f48e7f2-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-libsnappy —enable-zlib —enable-librist —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libaribb24 —enable-libaribcaption —enable-libdav1d —enable-libdavs2 —enable-libuavs3d —enable-libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs2 —enable-libxvid —enable-libaom —enable-libjxl —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libharfbuzz —enable-liblensfun —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-dxva2 —enable-d3d11va —enable-libvpl —enable-libshaderc —enable-vulkan —enable-libplacebo —enable-opencl —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libcodec2 —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
libavutil 58. 19.100 / 58. 19.100
libavcodec 60. 26.100 / 60. 26.100
libavformat 60. 11.100 / 60. 11.100
libavdevice 60. 2.101 / 60. 2.101
libavfilter 9. 11.100 / 9. 11.100
libswscale 7. 3.100 / 7. 3.100
libswresample 4. 11.100 / 4. 11.100
libpostproc 57. 2.100 / 57. 2.100
[in#0 @ 0000029d9a2cfc40] Error opening input : No such file or directory
Error opening input file Flight.mpg.
Error opening input files : No such file or directory

  


  C :\Users\pengp>ffmpeg -ss 5 -i C :\Users\pengp\Desktop\Flight.mpg -map data-re -codec copy -f data - > out.klv
ffmpeg version 2023-09-07-git-9c9f48e7f2-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-libsnappy —enable-zlib —enable-librist —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libaribb24 —enable-libaribcaption —enable-libdav1d —enable-libdavs2 —enable-libuavs3d —enable-libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs2 —enable-libxvid —enable-libaom —enable-libjxl —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libharfbuzz —enable-liblensfun —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-dxva2 —enable-d3d11va —enable-libvpl —enable-libshaderc —enable-vulkan —enable-libplacebo —enable-opencl —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libcodec2 —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
libavutil 58. 19.100 / 58. 19.100
libavcodec 60. 26.100 / 60. 26.100
libavformat 60. 11.100 / 60. 11.100
libavdevice 60. 2.101 / 60. 2.101
libavfilter 9. 11.100 / 9. 11.100
libswscale 7. 3.100 / 7. 3.100
libswresample 4. 11.100 / 4. 11.100
libpostproc 57. 2.100 / 57. 2.100
[mpegts @ 00000242148b8380] start time for stream 1 is not set in estimate_timings_from_pts
Input #0, mpegts, from 'C :\Users\pengp\Desktop\Flight.mpg' :
Duration : 00:03:14.88, start : 10.000000, bitrate : 4187 kb/s
Program 1
Stream #0:0[0x1e1] : Video : h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720, 60 fps, 60 tbr, 90k tbn
Stream #0:1[0x1f1] : Data : klv (KLVA / 0x41564C4B)
[mpegts @ 00000242148b8380] Invalid stream specifier : data-re.
Last message repeated 3 times
Stream map 'data-re' matches no streams.
To ignore this, add a trailing ' ?' to the map.
Failed to set value 'data-re' for option 'map' : Invalid argument
Error parsing options for output file -.
Error opening output files : Invalid argument

  


  Want to use ffmpeg klv to parse klv data display？