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• FFMPEG muxing overhead unknown creating HLS Live stream from mp4 files

  9 juillet 2021, par user72261

  I am using FFMPEG Concatenate to combine a number of mp4 files into a live HLS stream after around 40 seconds FFMPEG stops with error.

  


  I am working in PHP launching the FFMPEG command from there using exec as this project relies on users input from there own control panels.

  


  This is the error i am getting.

  


  ffmpeg version N-57204-gc7c138e411-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      57.  0.100 / 57.  0.100
  libavcodec     59.  0.100 / 59.  0.100
  libavformat    59.  0.100 / 59.  0.100
  libavdevice    59.  0.100 / 59.  0.100
  libavfilter     8.  0.101 /  8.  0.101
  libswscale      6.  0.100 /  6.  0.100
  libswresample   4.  0.100 /  4.  0.100
  libpostproc    56.  0.100 / 56.  0.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x72fdcc0] Auto-inserting h264_mp4toannexb bitstream filter
Input #0, concat, from '/storage/($username)/hls/playlist.txt':
  Duration: N/A, start: 0.000000, bitrate: 1404 kb/s
  Stream #0:0(und): Video: h264 (Main) (avc3 / 0x33637661), yuv420p, 960x540 [SAR 1:1 DAR 16:9], 1183 kb/s, 25 fps, 25 tbr, 180k tbn
    Metadata:
      handler_name    : Edgeware Video Media Handler
      vendor_id       : [0][0][0][0]
  Stream #0:1(swe): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 221 kb/s
    Metadata:
      handler_name    : Edgeware Audio Media Handler
      vendor_id       : [0][0][0][0]
Output #0, hls, to '/storage/($username)/hls/playlist.m3u8':
  Metadata:
    encoder         : Lavf59.0.100
  Stream #0:0(und): Video: h264 (Main) (avc3 / 0x33637661), yuv420p, 960x540 [SAR 1:1 DAR 16:9], q=2-31, 1183 kb/s, 25 fps, 25 tbr, 90k tbn
    Metadata:
      handler_name    : Edgeware Video Media Handler
      vendor_id       : [0][0][0][0]
  Stream #0:1(swe): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 221 kb/s
    Metadata:
      handler_name    : Edgeware Audio Media Handler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=    1 fps=0.0 q=-1.0 size=N/A time=00:00:00.00 bitrate=N/A speed=   0x    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7314640] Auto-inserting h264_mp4toannexb bitstream filter
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_0.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7300740] Auto-inserting h264_mp4toannexb bitstream filter
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_1.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7313e40] Auto-inserting h264_mp4toannexb bitstream filter
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_2.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7313e40] Auto-inserting h264_mp4toannexb bitstream filter
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_3.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7313e40] Auto-inserting h264_mp4toannexb bitstream filter
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_4.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7313e40] Auto-inserting h264_mp4toannexb bitstream filter
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_5.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7313e40] Auto-inserting h264_mp4toannexb bitstream filter
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_6.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7313e40] Auto-inserting h264_mp4toannexb bitstream filter
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_7.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_8.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/69426_9.ts' for writing
[hls @ 0x7303800] Opening '/storage/($username)/hls/playlist.m3u8.tmp' for writing
frame=  900 fps=0.0 q=-1.0 Lsize=N/A time=00:00:36.03 bitrate=N/A speed= 268x    
video:7232kB audio:973kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


  


  This is the FFMPEG command i am running

  


  exec('ffmpeg -y -nostdin -hide_banner -re -f concat -safe 0 -i "' . $CONCAT_FILE . '" -c copy -f hls -start_number 0 -hls_init_time 4 -hls_time 4 -hls_list_size 8 -hls_segment_type mpegts -hls_allow_cache 0 -hls_flags delete_segments+discont_start -hls_segment_filename "' . $SEGMENT_FORMAT . '" "' . $PLAYLIST_NAME . '" );


  


  All mp4 files are encoded to h264 with the same specifications and if the video has audio it is encoded to aac.

  


  I am also using the latest version of the FFMPEG binary for linux.

  


  Has anyone else faced this issue ?

  


• FFMPEG Metadata Extraction Fails

  30 juin 2021, par Emanuele Benozzi

  I have a little issue with FFMPEG on Windows :

  


  ffmpeg version 4.4-full_build-www_gyan_dev Copyright (c) 2000-2021 the FFmpeg developers

  


  I Have got a video and a zip file to embed in the container as metadata
I encoded source files with the command

  


  .\ffmpeg.exe  -y  -i D:\TestVideo3_T0.mkv -map 0 -attach .\TestVideo3_Merged_Meta.zip -metadata:s:t mimetype=application/zip -c:v copy D:\TestVideo3_Merged.mkv


  


  Result of encoded data :

  


  Input #0, matroska,webm, from 'D:\TestVideo3_T0.mkv':
  Metadata:
    ENCODER         : Lavf58.76.100
  Duration: 00:00:02.00, start: 0.000000, bitrate: 4461 kb/s
  Stream #0:0: Video: hevc (Rext), gbrp(pc, gbr/unknown/unknown, progressive), 2048x1536, 10 fps, 10 tbr, 1k tbn, 10 tbc (default)
    Metadata:
      ENCODER         : Lavc58.134.100 libx265
      DURATION        : 00:00:02.000000000
Output #0, matroska, to 'D:\TestVideo3_Merged.mkv':
  Metadata:
    encoder         : Lavf58.76.100
  Stream #0:0: Video: hevc (Rext), gbrp(pc, gbr/unknown/unknown, progressive), 2048x1536, q=2-31, 10 fps, 10 tbr, 1k tbn, 1k tbc (default)
    Metadata:
      ENCODER         : Lavc58.134.100 libx265
      DURATION        : 00:00:02.000000000
  Stream #0:1: Attachment: none
    Metadata:
      filename        : .\TestVideo3_Merged_Meta.zip
      mimetype        : application/zip
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  File .\TestVideo3_Merged_Meta.zip -> Stream #0:1
Press [q] to stop, [?] for help
frame=   20 fps=0.0 q=-1.0 Lsize=    3473kB time=00:00:01.70 bitrate=16727.1kbits/s speed= 554x
video:1086kB audio:0kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 219.801529%


  


  When I analyze the output file I can find the zip file embedded on the mkv video.
Deconding the file seems not working. (I tries -dump_attacment:s :s:t :t, ecc...)

  


  .\ffmpeg -y -i .\TestVideo3_Merged.mkv -dump_attachment:t .\Meta.zip

ffmpeg version 4.4-full_build-www_gyan_dev Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10.2.0 (Rev6, 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-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --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-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      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Trailing option(s) found in the command: may be ignored.
[matroska,webm @ 0000023ddd5cf880] Could not find codec parameters for stream 1 (Attachment: none): unknown codec
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, matroska,webm, from '.\TestVideo3_Merged.mkv':
  Metadata:
    ENCODER         : Lavf58.76.100
  Duration: 00:00:02.00, start: 0.000000, bitrate: 14226 kb/s
  Stream #0:0: Video: hevc (Rext), gbrp(pc, gbr/unknown/unknown, progressive), 2048x1536, 10 fps, 10 tbr, 1k tbn, 10 tbc (default)
    Metadata:
      ENCODER         : Lavc58.134.100 libx265
      DURATION        : 00:00:02.000000000
  Stream #0:1: Attachment: none
    Metadata:
      filename        : .\TestVideo3_Merged_Meta.zip
      mimetype        : application/zip
At least one output file must be specified
PS D:\> .\ffmpeg -y -i .\TestVideo3_Merged.mkv -dump_attachment:s:t .\Meta.zip
ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10.2.0 (Rev6, 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-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --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-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      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Trailing option(s) found in the command: may be ignored.
[matroska,webm @ 000002492afef7c0] Could not find codec parameters for stream 1 (Attachment: none): unknown codec
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, matroska,webm, from '.\TestVideo3_Merged.mkv':
  Metadata:
    ENCODER         : Lavf58.76.100
  Duration: 00:00:02.00, start: 0.000000, bitrate: 14226 kb/s
  Stream #0:0: Video: hevc (Rext), gbrp(pc, gbr/unknown/unknown, progressive), 2048x1536, 10 fps, 10 tbr, 1k tbn, 10 tbc (default)
    Metadata:
      ENCODER         : Lavc58.134.100 libx265
      DURATION        : 00:00:02.000000000
  Stream #0:1: Attachment: none
    Metadata:
      filename        : .\TestVideo3_Merged_Meta.zip
      mimetype        : application/zip
At least one output file must be specified


  


  Can anyone give a hint to solve this problem ?

  


  Thanks in advance

  


• Can't use OpenCV to decode video on GPU with cv2.CAP_FFMPEG

  19 juillet 2021, par Reza

  I'm trying to get all frames of list of videos(lots of .mp4 videos) using OpenCV. In order to speed up the process I was thinking may be I can use FFMPEG with Nvidia Video Codec SDK to use hardware-accelerated decoding(I have T4 cards on my machine). My code is something like this :

  


  import os
os.environ["OPENCV_FFMPEG_CAPTURE_OPTIONS"]="video_codec;h264_cuvid"
import cv2

ret = cv2.VideoCapture("input.mp4", cv2.CAP_FFMPEG)
while True:
    x, y = ret.read()
    if x:
        continue
    break


  


  but I get these errors when I run my script.

  


  [ERROR:0] global /tmp/pip-req-build-afu9cjzs/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp (1086) open Could not find decoder 'h264_cuvid'
[ERROR:0] global /tmp/pip-req-build-afu9cjzs/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp (1109) open VIDEOIO/FFMPEG: Failed to initialize VideoCapture


  


  My ffmpeg configs, ffmpeg :

  


  ffmpeg version N-102965-gf531a1a4e8 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
  configuration: --enable-nonfree --enable-cuda --enable-cuvid --enable-nvdec --enable-cuda-nvcc --enable-nvenc --enable-libnpp --enable-shared --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64
  libavutil      57.  0.100 / 57.  0.100
  libavcodec     59.  3.101 / 59.  3.101
  libavformat    59.  4.100 / 59.  4.100
  libavdevice    59.  0.100 / 59.  0.100
  libavfilter     8.  0.103 /  8.  0.103
  libswscale      6.  0.100 /  6.  0.100
  libswresample   4.  0.100 /  4.  0.100
Hyper fast Audio and Video encoder


  


  and ffmpeg -hwaccels :

  


  ffmpeg version N-102965-gf531a1a4e8 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
  configuration: --enable-nonfree --enable-cuda --enable-cuvid --enable-nvdec --enable-cuda-nvcc --enable-nvenc --enable-libnpp --enable-shared --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64
  libavutil      57.  0.100 / 57.  0.100
  libavcodec     59.  3.101 / 59.  3.101
  libavformat    59.  4.100 / 59.  4.100
  libavdevice    59.  0.100 / 59.  0.100
  libavfilter     8.  0.103 /  8.  0.103
  libswscale      6.  0.100 /  6.  0.100
  libswresample   4.  0.100 /  4.  0.100
Hardware acceleration methods:
cuda


  


  OpenCV version opencv-python==4.5.3.56