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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 ?

  


• Video overlay of several network streams using ffmpeg

  24 avril 2018, par Hristo Ivanov

  I am writing my first program using the FFMPEG libraries, unfortunately it is not a simple one.

  What I need is to :

  • capture several network inputs(udp).
  • demux the inputs.
  • overlay the video streams.
  • mix the audio(or some other logic).
  • encode the resulting streams.
  • remux the streams and write the result to file.

  For now I am playing with the ffmpeg.exe tool trying achieve this functionality. The command I have looks like this :

  .\ffmpeg.exe -threads auto -y -i input0 -i input1 \
  
      -filter_complex "[0:v]scale=1920x1080[v0];[1:v]scale=480x270[v1];[v0][v1]overlay=1440:810[v2]" \
  
      -map [v2] -map 0:a -c:v libx264 -preset ultrafast -c:a copy output.mp4

  When input0 and input1 are files the resulting output is correct, on the other hand, when the inputs are udp streams the resulting output is not correct, the video freezes most of the time.

  The file inputs are generated from the udp streams, using the following command :

  .\ffmpe_Last.exe -threads auto -y -i "udp://@ip:port" -c copy -f mpegts input1.mpg

  Question 1.
  Why is the above command not producing good ouput for upd streams ? What are the differences between the original stream and the dump of that stream for ffmpeg.exe.

  Question 2.
  Is there some argument/s that can fix the command ?

  Question 3.
  What logic/algorithm is needed to correctly overlay two network streams.

• How to set the rotation angle of jpeg with ffmpeg

  20 avril 2022, par Feng Nier

  I have figured out how to get the rotation of the jpeg,

  


  auto m = av_dict_get(frame->metadata, "orientation", nullptr, AV_DICT_IGNORE_SUFFIX); 


  


  but I am not able to set it by ffmpeg.