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• .MKV Video File not playing on Azure Kinect Viewer

  17 avril 2023, par Ashutosh Singla

  I have a video file that contains 4 streams, 3 videos streams and one steam for metadata. I want to extract these streams first with metadata and then want to combine them together with metadata. I would like to play the video on Azure Kinect Viewer so that I can see if I am doing anything wrong while extracting and copying the stream.

  


  Original Stream Info :

  


  Input #0, matroska,webm, from 'output_master.mkv':
Metadata:
title           : Azure Kinect
encoder         : libmatroska-1.4.9
creation_time   : 2021-05-20T12:11:15.000000Z
K4A_DEPTH_DELAY_NS: 0
K4A_WIRED_SYNC_MODE: MASTER
K4A_COLOR_FIRMWARE_VERSION: 1.6.110
K4A_DEPTH_FIRMWARE_VERSION: 1.6.79
K4A_DEVICE_SERIAL_NUMBER: 000123102712
K4A_START_OFFSET_NS: 298800000
Duration: 00:00:40.03, start: 0.000000, bitrate: 480934 kb/s

Stream #0:0(eng): Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 2048x1536, SAR 1:1 DAR 4:3, 30 fps, 30 tbr, 1000k tbn (default)
Metadata:
  title           : COLOR
  K4A_COLOR_TRACK : 14499183330009048
  K4A_COLOR_MODE  : MJPG_1536P
Stream #0:1(eng): Video: rawvideo (b16g / 0x67363162), gray16be, 640x576, SAR 1:1 DAR 10:9, 30 fps, 30 tbr, 1000k tbn (default)
Metadata:
  title           : DEPTH
  K4A_DEPTH_TRACK : 429408169412322196
  K4A_DEPTH_MODE  : NFOV_UNBINNED
Stream #0:2(eng): Video: rawvideo (b16g / 0x67363162), gray16be, 640x576, SAR 1:1 DAR 10:9, 30 fps, 30 tbr, 1000k tbn (default)
Metadata:
  title           : IR
  K4A_IR_TRACK    : 194324406376800992
  K4A_IR_MODE     : ACTIVE
Stream #0:3: Attachment: none
Metadata:
  filename        : calibration.json
  mimetype        : application/octet-stream
  K4A_CALIBRATION_FILE: calibration.json


  


  I am using the below command to extract Stream #0:0, Stream #0:1, and Stream #0:2 by changing map 0:X.

  


  ffmpeg -i output_master.mkv -c copy -allow_raw_vfw 1 -map 0:0 temp_0.mkv 


  


  To extract the configuration file from the video and store them in calibration.json, I am using the command below :

  


  ffmpeg -dump_attachment:3 calibration.json -i output_master.mkv


  


  To combine the streams with configuration file using FFmpeg, I am using the command below :

  


  ffmpeg -i temp_0.mkv -i temp_1.mkv -i temp_2.mkv -c copy -map 0:0 -map 1:0 -map 2:0 -allow_raw_vfw 1 -attach calibration.json -metadata:s:3 mimetype=application/octet-stream out.mkv


  


  Reconstrcuted Stream Info :

  


    Could not find codec parameters for stream 3 (Attachment: none): unknown codec
  Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options

  Input #0, matroska,webm, from '.\out.mkv':
  Metadata:
  title           : Azure Kinect
  K4A_COLOR_FIRMWARE_VERSION: 1.6.110
  K4A_DEPTH_FIRMWARE_VERSION: 1.6.79
  K4A_DEVICE_SERIAL_NUMBER: 000123102712
  K4A_START_OFFSET_NS: 298800000
  K4A_DEPTH_DELAY_NS: 0
  K4A_WIRED_SYNC_MODE: MASTER
  ENCODER         : Lavf60.3.100
  Duration: 00:00:40.06, start: 0.000000, bitrate: 480559 kb/s

  Stream #0:0(eng): Video: mjpeg (Baseline), yuvj422p(pc, bt470bg/unknown/unknown), 2048x1536, SAR 1:1 DAR 4:3, 30 fps, 30 tbr, 1k tbn (default)
  Metadata:
  title           : COLOR
  K4A_COLOR_TRACK : 14499183330009048
  K4A_COLOR_MODE  : MJPG_1536P
  DURATION        : 00:00:40.029000000

  Stream #0:1(eng): Video: rawvideo, rgb555le, 640x576, SAR 1:1 DAR 10:9, 30 fps, 30 tbr, 1k tbn (default)
  Metadata:
  title           : DEPTH
  K4A_DEPTH_TRACK : 429408169412322196
  K4A_DEPTH_MODE  : NFOV_UNBINNED
  DURATION        : 00:00:40.062000000

  Stream #0:2(eng): Video: rawvideo, rgb555le, 640x576, SAR 1:1 DAR 10:9, 30 fps, 30 tbr, 1k tbn (default)
  Metadata:
  title           : IR
  K4A_IR_TRACK    : 194324406376800992
  K4A_IR_MODE     : ACTIVE
  DURATION        : 00:00:40.062000000

  Stream #0:3: Attachment: none
  Metadata:
  filename        : calibration.json
  mimetype        : application/octet-stream


  


  However, I can not play the video on Azure Kinect Viewer, It displays failed to open recording.

  


  Any help would be appreciated.

  


• ffmpeg bitrate 10% bigger than requested

  22 avril 2023, par danday74

  I have an ffmpeg script.

  


  I request -b:v:0 1000k but get the output BANDWIDTH=1100000 in my master playlist - I was expecting BANDWIDTH=1000000

  


  As you can see there are no audio streams. Why is the BANDWIDTH 10% bigger on every occasion than the requested bitrate ?

  


  Script :

  


  ffmpeg -i rgb.mp4 -hide_banner # dump video stream info

rm -rf hls

ffmpeg -i rgb.mp4 \
  -v warning -preset ultrafast -g 60 -sc_threshold 0 \
  -map 0:0 -map 0:0 -map 0:0 -map 0:0 \
  -s:v:0 1440x1080 -c:v:0 libx264 -b:v:0 1000k \
  -s:v:1 1440x1080 -c:v:1 libx264 -b:v:1 2000k \
  -s:v:2 1920x1440 -c:v:2 libx264 -b:v:2 3000k \
  -s:v:3 1920x1440 -c:v:3 libx264 -b:v:3 4000k \
  -var_stream_map "v:0 v:1 v:2 v:3" \
  -master_pl_name master.m3u8 -f hls \
  -hls_time 6 -hls_list_size 0 -hls_playlist_type vod \
  -hls_segment_filename "hls/v%v/chunk%d.ts" "hls/v%v/index.m3u8"

cat hls/master.m3u8


  


  Output :

  


  $ sh ./ffmpeg-test-script.sh
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rgb.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 2021-08-03T11:45:50.000000Z
    encoder         : Lavf59.4.102
  Duration: 00:00:50.04, start: 0.000000, bitrate: 37415 kb/s
  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920x1440, 37412 kb/s, 30 fps, 30 tbr, 19200 tbn (default)
    Metadata:
      creation_time   : 2021-08-03T11:45:50.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
    Side data:
      displaymatrix: rotation of -180.00 degrees
At least one output file must be specified
[swscaler @ 000001fae15daf00] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 000001faef115ec0] deprecated pixel format used, make sure you did set range correctly
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-STREAM-INF:BANDWIDTH=1100000,RESOLUTION=1440x1080,CODECS="avc1.42c028"
v0/index.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=2200000,RESOLUTION=1440x1080,CODECS="avc1.42c028"
v1/index.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=3300000,RESOLUTION=1920x1440,CODECS="avc1.42c032"
v2/index.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=4400000,RESOLUTION=1920x1440,CODECS="avc1.42c032"
v3/index.m3u8


  


• ffmpeg Error when evaluating the expression xxx for y when overlay

  23 mars 2023, par LF00

  I use ffmpeg to add a flip watermark on the wideo with overlay,

  


  This works well with x

  


  ffmpeg -hide_banner -i HLS_540.ts -i out.png -filter_complex "[0:v][1:v]overlay=x='-w+400+100*mod(t\,(W+w-400)/100)':y=250" out.mp4

  


  But when I set y with expression if(eq(mod(t,5),0),rand(0,100),y) it show's error.

  


  ffmpeg -hide_banner -i HLS_540.ts -i out.png -filter_complex "[0:v][1:v]overlay=x='-w+400+100*mod(t\,(W+w-400)/100)':y='if(eq(mod(t\,5)\,0)\,rand(0\,100)\,y)'" out.mp4

  


  [Parsed_overlay_0 @ 000002438ba6d880] [Eval @ 000000cf5a3fe2e0] Unknown function in 'rand(0,100),y)'
[Parsed_overlay_0 @ 000002438ba6d880] Error when evaluating the expression 'if(eq(mod(t,5),0),rand(0,100),y)' for y
[Parsed_overlay_0 @ 000002438ba6d880] Failed to configure input pad on Parsed_overlay_0


  


  While when I do like this ffplay -f lavfi -i "color=color=yellow" -vf "drawtext=text='s':x=if(eq(mod(t\,5)\,0)\,rand(0\,(W-tw))\,x+0.03*mod(t\,5)):y=if(eq(mod(t\,5)\,0)\,rand(0\,(H-th))\,y)" it works well.

  


  How can I set rand y in the failed command ?

  


  Envirionment :
win11, git-bash

  


  ffmpeg -version
ffmpeg version N-104863-g6cf55b9da2-20211213 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 11.2.0 (crosstool-NG 1.24.0.498_5075e1f)
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librist --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20211213
libavutil      57. 11.100 / 57. 11.100
libavcodec     59. 14.100 / 59. 14.100
libavformat    59. 10.100 / 59. 10.100
libavdevice    59.  0.101 / 59.  0.101
libavfilter     8. 20.100 /  8. 20.100
libswscale      6.  1.101 /  6.  1.101
libswresample   4.  0.100 /  4.  0.100
libpostproc    56.  0.100 / 56.  0.100