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• How to decode two Dolby E audio streams simultaneously with ffmpeg ?

  11 août 2022, par David

  I'm trying to decode 2 Dolby-E audio streams simultaneously.

  


  ffmpeg -non_pcm_mode copy -i C:\vlc-record.ts -map 0:3 -map 0:4 -c:a pcm_s24le -f s24le - | ffplay -

  


  Using -map 0:3 it works for one at a time but when I add the second one -map 0:4 it only process the first one and there is just one stream on my dolby_e output pipe.

  


  Is there a way to create a two streams multicanal non-pcm output from 2 Dolbys PCM streams ?

  


  I tried to find a solution with named pipe but it seems like windows command line doesn't accept this. I also tried to merge the PCM streams but then it says Invalid data found when processing input.

  


  I can't make it with 2 pass because I'll be using it with udp live video streams.

  


  ffmpeg version 2022-03-07-git-e645a1ddb9-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 11.2.0 (Rev7, 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-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --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-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-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      57. 22.100 / 57. 22.100
  libavcodec     59. 22.100 / 59. 22.100
  libavformat    59. 17.103 / 59. 17.103
  libavdevice    59.  5.100 / 59.  5.100
  libavfilter     8. 27.100 /  8. 27.100
  libswscale      6.  5.100 /  6.  5.100
  libswresample   4.  4.100 /  4.  4.100
  libpostproc    56.  4.100 / 56.  4.100
ffplay version 2022-03-07-git-e645a1ddb9-full_build-www.gyan.dev Copyright (c) 2003-2022 the FFmpeg developers
  built with gcc 11.2.0 (Rev7, 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-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --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-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-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      57. 22.100 / 57. 22.100
  libavcodec     59. 22.100 / 59. 22.100
  libavformat    59. 17.103 / 59. 17.103
  libavdevice    59.  5.100 / 59.  5.100
  libavfilter     8. 27.100 /  8. 27.100
  libswscale      6.  5.100 /  6.  5.100
  libswresample   4.  4.100 /  4.  4.100
  libpostproc    56.  4.100 / 56.  4.100

Input #0, mpegts, from 'C:\vlc-record.ts':
  Duration: 00:00:15.76, start: 42530.445511, bitrate: 31505 kb/s
  Program 1
  Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn
  Stream #0:1: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 256 kb/s
  Stream #0:2: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 256 kb/s
  Stream #0:3: Audio: s302m (BSSD / 0x44535342), stereo, s32 (20 bit), 2304 kb/s
  Stream #0:4: Audio: s302m (BSSD / 0x44535342), stereo, s32 (20 bit), 2304 kb/s
Stream mapping:
  Stream #0:3 -> #0:0 (s302m (native) -> pcm_s24le (native))
Press [q] to stop, [?] for help
Output #0, s24le, to 'pipe:':
  Metadata:
    encoder         : Lavf59.17.103
  Stream #0:0: Audio: pcm_s24le, 48000 Hz, stereo, s32 (20 bit), 2304 kb/s
    Metadata:
      encoder         : Lavc59.22.100 pcm_s24le
[dolby_e @ 0000026b16da0640] Stream has 2 programs (configuration 0), channels will be output in native order.
Input #0, s337m, from 'pipe:':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Audio: dolby_e, 44800 Hz, 7.1, fltp
[dolby_e @ 0000026b16d7ca80] Stream has 2 programs (configuration 0), channels will be output in native order.
   1.25 M-A:  0.000 fd=   0 aq=  292KB vq=    0KB sq=    0B f=0/0
av_interleaved_write_frame(): Broken pipe
Error writing trailer of pipe:: Broken pipe
size=    1451kB time=00:00:05.20 bitrate=2286.3kbits/s speed=3.07x
video:0kB audio:1462kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Error closing file pipe:: Broken pipe
Conversion failed!



  


• FFMPEG RTSP stream to multiple output, one mp4 and also restream

  16 août 2022, par csonty

  I would like to seek your help with FFMPEG and how to use it properly on Windows and Linux. I have to get the camera RTSP stream and record it into 1 minutes segments and also stream at the same time.
I did try to stream it to rtsp, but it didn't work at all [f=RTSP]rtsp ://ipaddress:554/mystream , it stuck and did nothing.

  


  I did also try to add the -use_wallclock_as_timestamps 1 but it didn't do anything. I also tried to add the -flags +global_header, but not sure, how to add it into this script.

  


  I did try it on both Linux and Windows with the following commands (not sure how to create a bash script from it)

  


  Linux :
./usr/bin/ffmpeg -i 'rtsp://username:password@192.168.68.99:554/Streaming/Channels/101/' -c copy -f tee -map 0:v '[f=segment:strftime=1:segment_time=60]wwcam99-%Y-%m-%d_%H-%M-%S.mp4|[f=mpegts]udp://10.10.3.251:5555'

  


  Windows :
ffmpeg -i "rtsp://username:password@192.168.68.99:554/Streaming/Channels/101/" -c copy -f tee -map 0:v "[f=segment:strftime=1:segment_time=60]wwcam99-%%Y-%%m-%%d_%%H-%%M-%%S.mp4|[f=mpegts]udp://10.10.3.199:5555"

  


  It records the files and the stream can be viewed on the localhost (not sure why I cannot view from other machines even if the firewall is off, but it might be a network issue)

  


  This is the output with mostly error messages that I couldn't fix :

  


  


  [rtsp @ 0x563f2688cf80] max delay reached. need to consume packet
[rtsp @ 0x563f2688cf80] RTP : missed 216 packets
[h264 @ 0x563f26890c40] left block unavailable for requested intra4x4 mode -1
[h264 @ 0x563f26890c40] error while decoding MB 0 12, bytestream 144004
[h264 @ 0x563f26890c40] concealing 13993 DC, 13993 AC, 13993 MV errors in I frame
Input #0, rtsp, from 'rtsp ://username:password@192.168.68.99:554/Streaming/Channels/101/' :
Metadata :
title : Media Presentation
Duration : N/A, start : 0.983333, bitrate : N/A
Stream #0:0 : Video : h264 (Main), yuvj420p(pc, bt709, progressive), 2688x1520 [SAR 1:1 DAR 168:95], 6 fps, 20 tbr, 90k tbn, 12 tbc
[segment @ 0x563f268ced00] Opening 'wwcam99-2022-08-16_17-28-20.mp4' for writing
Output #0, tee, to '[f=segment:strftime=1:segment_time=60]wwcam09-%Y-%m-%d_%H-%M-%S.mp4|[f=mpegts]udp ://10.10.3.251:5555' :
Metadata :
title : Media Presentation
encoder : Lavf58.29.100
Stream #0:0 : Video : h264 (Main), yuvj420p(pc, bt709, progressive), 2688x1520 [SAR 1:1 DAR 168:95], q=2-31, 6 fps, 20 tbr, 6 tbn, 6 tbc
Stream mapping :
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -5 ; changing to 1. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 1, current : -4 ; changing to 2. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 2, current : -3 ; changing to 3. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 3, current : -2 ; changing to 4. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 4, current : -1 ; changing to 5. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 5, current : 0 ; changing to 6. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 6, current : 1 ; changing to 7. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 7, current : 2 ; changing to 8. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 8, current : 3 ; changing to 9. This may result in incorrect timestamps in the output file.
[tee @ 0x563f268cbc00] Non-monotonous DTS in output stream 0:0 ; previous : 9, current : 4 ; changing to 10. This may result in incorrect timestamps in the output file.

  


  


  Any help would be highly appreciated

  


• Concat video files using ffmpeg in individual subfolders with shell script [closed]

  18 août 2022, par Weatherdark

  I had a Windows script that would do what I want, but I switched my server to Unraid so now I need a new script. Anyway, enough backstory.

  


  I regularly have media that is named in a style like "Videoname CD(Number).ext". They get stored in subfolders called Videoname with a different folder for each video.

  


  What I need is a script that goes through each subfolder and creates a concat.txt file with the names of each video file ending in CD(number) in it, in numerical order, that will then call ffmpeg to concat the files using the concat.txt in each subfolder, placing the video file (named after the subfolder) into a folder like /mnt/User/Pool/Finished/Videofile. Then, hopefully it will delete the concat.txt file so I know which folders are finished with a quick look.

  


  I know the ffmpeg concat options for that part, I just have no idea what to use to make sure the resulting video file is named after the subfolder it came from.

  


  I could do this in Windows (albeit in a hacky, not very pretty way), but I have no idea how to accomplish this in Linux.

  


  As an example...

  


  


  /mnt/User/Pool/Concat/10.10.2022.0034.Recording/10.10.2022.0034.Recording
CD1.mp4
/mnt/User/Pool/Concat/10.10.2022.0034.Recording/10.10.2022.0034.Recording
CD2.mp4
/mnt/User/Pool/Concat/10.10.2022.0034.Recording/10.10.2022.0034.Recording
CD3.mp4
/mnt/User/Pool/Concat/10.10.2022.0034.Recording/10.10.2022.0034.Recording
CD4.mp4
/mnt/User/Pool/Concat/10.11.2022.0254.Recording/10.11.2022.0254.Recording
CD1.mp4
/mnt/User/Pool/Concat/10.11.2022.0254.Recording/10.11.2022.0254.Recording
CD2.mp4
/mnt/User/Pool/Concat/10.11.2022.0254.Recording/10.11.2022.0254.Recording
CD3.mp4
/mnt/User/Pool/Concat/10.11.2022.0254.Recording/10.11.2022.0254.Recording
CD4.mp4

  


  Put through ffmpeg to concat, results in files

  


  /mnt/User/Pool/Finished/10.10.2022.0034.Recording.mp4

  


  /mnt/User/Pool/Finished/10.11.2022.0254.Recording.mp4

  


  


  Hopefully that makes sense.

  


  Someone closed this because it wasn't "focused enough" and didn't focus on one thing... but there is ONLY one thing that it needs to do.

  


  I have no idea what they would want me to change to fix what isn't broken, so I fundamentally am at a loss. The script just needs to search through subfolders, create a concat.txt file and send that file to ffmpeg creating the new file, named after the folder, in a new location. That is literally as focused as I can make it.