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• How to stream audio from ffserver

  22 mai 2019, par Doro

  I trying to stream 2 files - 1.mkv without audio (which streaming ok) and 2.mkv with audio encoded with Vorbis codec which i can’t stream. For encoding I used

  ffmpeg -i 2.mp4 -strict -2 -c:a vorbis ex.mkv 

  And it playing ok with ffplay

  Server log :

  Fri May 17 00:49:08 2019 Opening feed file '1.mkv' for stream 'test1-rtsp'
  
  Fri May 17 00:49:08 2019 [matroska,webm @ 0x200746c0]Unknown entry 0x55B0
  
  Thu Dec 14 21:35:00 1950 [h264 @ 0x2007dcc0]gray chroma
  
  Fri May 17 00:49:08 2019 [h264 @ 0x2007dcc0]error while decoding MB 18 1, bytestream 1989
  
  Fri May 17 00:49:08 2019 [h264 @ 0x2007dcc0]concealing 432 DC, 432 AC, 432 MV errors in I frame
  
  Fri May 17 00:49:08 2019 Opening feed file '2.mkv' for stream 'test2-rtsp'
  
  Fri May 17 00:49:08 2019 [matroska,webm @ 0x200746c0]Unknown entry 0x55B0
  
  Fri May 17 00:49:08 2019 FFserver started.
  
  Fri May 17 00:49:25 2019 [matroska,webm @ 0x20080de0]Unknown entry 0x55B0
  
  Fri May 17 00:49:25 2019 127.0.0.1:33582 - - "PLAY test2-rtsp/streamid=0 RTP/UDP"
  
  Fri May 17 00:49:25 2019 127.0.0.1 - - [SETUP] "rtsp://127.0.0.1:7654/test2-rtsp/ RTSP/1.0" 200 2553

  Client log :

  Bad packed header lengths (30,0,1250,2673)
  
  [udp @ 00000236f6318500] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [udp @ 00000236f63185c0] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [udp @ 00000236f633dc40] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [udp @ 00000236f634df00] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [rtsp @ 00000236f63153c0] method SETUP failed: 503 Service Unavailable
  
  rtsp://127.0.0.1:7654/test2-rtsp: Server returned 5XX Server Error reply

  Configure ffserver file :

  Port 8090
  
  BindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 500000
  
  CustomLog -
  
  NoDaemon
  
  
  
  RTSPPort 7654
  
  RTSPBindAddress 0.0.0.0
  
  
  
  <stream>
  
      Format rtp
  
      File "1.mkv"
  
  </stream>
  
  <stream>
  
      Format rtp
  
      Strict -2
  
      AudioCodec vorbis
  
      File "2.mkv"
  
  </stream>

• How to extract anamorphic video frame correctly using ffmpeg ?

  12 mai 2019, par user10246830

  I can extract the frames using below ffmpeg but it comes out 720x576 square pixel instead of anamorphic non-square 1024x576. How do I output 720x576 rectangle pixel as shown on TV ?

  How do i deinterlace the frames as output is interlaced ?

  ffmpeg -i Midnight.vob -vf fps=1,setdar=16:9 -q:v 2 Midnight%06d.jpg

  How do i deal with this below in ffmpeg.

  [swscaler @ 0000000002a8ec40] deprecated pixel format used, make sure
  you did set range correctly. Video : mjpeg, yuvj420p(pc).

  Am I to understand that the video colour format is out of date and that (pc) is the range 0-255 for colours ?

  ffmpeg -i Midnight.vob -vf fps=1,setdar=16:9 -q:v 2 Midnight%06d.jpg ffmpeg version N-93828-g68bac50604 Copyright (c) 2000-2019 the FFmpeg developers
  
  
  
  built with gcc 8.3.1 (GCC) 20190414 configuration: --enable-gpl
  
  --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt libavutil      56. 26.101 / 56. 26.101 libavcodec     58. 52.101 / 58.
  
  52.101 libavformat    58. 27.103 / 58. 27.103 libavdevice    58.  7.100 / 58.  7.100 libavfilter     7. 50.100 /  7. 50.100 libswscale      5.  4.100 /  5.  4.100 libswresample   3.  4.100 /  3.  4.100 libpostproc    55.  4.100 / 55.  4.100 Input #0, mpeg, from 'Midnight.vob':   Duration: 00:42:04.58, start: 0.287267, bitrate: 5829 kb/s
  
      Stream #0:0[0x1bf]: Data: dvd_nav_packet
  
      Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:2[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
  
      Stream #0:3[0x81]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
  
      Stream #0:4[0x82]: Audio: ac3, 48000 Hz, mono, fltp, 192 kb/s
  
      Stream #0:5[0x22]: Subtitle: dvd_subtitle
  
      Stream #0:6[0x24]: Subtitle: dvd_subtitle
  
      Stream #0:7[0x25]: Subtitle: dvd_subtitle
  
      Stream #0:8[0x26]: Subtitle: dvd_subtitle
  
      Stream #0:9[0x28]: Subtitle: dvd_subtitle
  
      Stream #0:10[0x21]: Subtitle: dvd_subtitle
  
      Stream #0:11[0x23]: Subtitle: dvd_subtitle Stream mapping:   Stream #0:1 -> #0:0 (mpeg2video (native) -> mjpeg (native)) Press [q] to stop, [?] for help [swscaler @ 000000000295ec40] deprecated pixel format used, make sure you did set range correctly Output #0, image2, to 'Midnight%06d.jpg':   Metadata:
  
      encoder         : Lavf58.27.103
  
      Stream #0:0: Video: mjpeg, yuvj420p(pc), 720x576 [SAR 36:5 DAR 9:1], q=2-31, 200 kb/s, 1 fps, 1 tbn, 1 tbc
  
      Metadata:
  
        encoder         : Lavc58.52.101 mjpeg
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1 [mpeg @ 0000000000400340] New subtitle stream 0:12 at pos:7458830 and DTS:12.4873s [mpeg @ 0000000000400340] New subtitle stream 0:13 at pos:7475214 and DTS:12.4873s frame=  951 fps=115 q=2.0 Lsize=N/A time=00:15:51.00 bitrate=N/A speed= 115x
  
  
  
  video:49190kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  Settled on for large jpg to render then shrink to 1024x576. If deinterlace remove yadif=1.

  ffmpeg -i input.vob -vf yadif=1,scale=4096x2304,setdar=16:9 -qmin 1 -q:v 1 output%06d.jpg

  Jpg is original size 1024x576 square pixel.

  ffmpeg -i input.vob -vf yadif=1,fps=1,scale=iw*sar:ih,setsar=1 -qmin 1 -q:v 1 output%06d.jpg

  Png gives better quality over jpg.

  Thanks for your contributions.

• How to transcode raw uncompressed RTP to an H264 RTSP stream

  10 mai 2019, par Gino

  I am new to streaming and am trying to figure out how to transcode streams via ffmpeg.

  I have a few raw rtp uncompressed streams where some are on address 239.x.x.x and others are on 169.x.x.x.

  I want to setup an RTSP server to grab those streams and transcode them into H264 and stream them out to a new address and port.

  I have tried some ffmpeg commands but I keep getting errors about having to compile ffmpeg with pthreads.

  I have no idea how to do that so does anyone know what commands I can use that will work with the current windows version of ffmpeg ?

  For now, I am just trying to save the stream to a file to see if that works. Command I am using is :

  ffmpeg -i rtp://224.1.1.10:6972 transcoded test.mp4

  and the return I get in the command line is

  ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 8.3.1 (GCC) 20190414
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  
  
  [udp @ 000002cb292abf40] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)  
  
  [udp @ 000002cb292bc200] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)  
  
  rtp://224.1.1.10:6972: Immediate exit requested  
  
  Exiting normally, received signal 2.