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  Am I to understand that the video colour format is out of date and that (pc) is the range 0-255 for colours ?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

• Video file not trimming and copying using FFMpeg in C#

  15 mai 2019, par chapperzuk

  I am trying to clip a video using C# in Visual Studios with FFMpeg. I run the code below and it doesn’t come back with any errors, except it doesn’t create a new video file.

  I’ve looked around here to make sure I’m using the correct code, but after multiple attempts it still won’t copy.

  string videoFile = @"C:\Users\dave\Documents\video 1.mp4";
  
  string outputFile = @"C:\Users\dave\Documents\video 2.mp4";
  
  
  
  Process process = new Process();
  
  process.StartInfo.RedirectStandardOutput = true;
  
  process.StartInfo.RedirectStandardError = true;
  
  process.StartInfo.FileName = @"C:\Users\dave\Documents\ffmpeg.exe";
  
  process.StartInfo.Arguments = "ffmpeg -i " + videoFile + " -ss 00:30:00 -t 00:00:10 -c copy " + outputFile;
  
  process.StartInfo.UseShellExecute = false;
  
  process.StartInfo.CreateNoWindow = true;
  
  process.Start();

  I was expecting to get a video cut from the original video, starting at the 30 second mark and lasting 10 seconds, but nothing is created.

  I am using the latest FFMpeg from https://ffmpeg.zeranoe.com/builds/

  UPDATE If I run the code in command prompt - The file comes out corrupt though

  ffmpeg -i "C:\\Users\\dave\\Documents\\video 1.mp4" -ss 00:30:00 -t 00:00:10 -c copy "C:\\Users\\dave\\Documents\\video 2.mp4"
  
  ffmpeg version N-93851-gdcc999819d 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. 27.100 / 56. 27.100
  
    libavcodec     58. 52.101 / 58. 52.101
  
    libavformat    58. 27.103 / 58. 27.103
  
    libavdevice    58.  7.100 / 58.  7.100
  
    libavfilter     7. 51.100 /  7. 51.100
  
    libswscale      5.  4.101 /  5.  4.101
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\\Users\\dave\\Documents\\video 1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      creation_time   : 2019-01-15T21:57:04.000000Z
  
      title           : My Movie
  
      encoder         : Lavf56.15.102
  
      description     : This video is about My Movie
  
    Duration: 00:06:48.22, start: 0.000000, bitrate: 1283 kb/s
  
      Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 1202 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 2997 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-01-15T21:57:04.000000Z
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 74 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-01-15T21:57:04.000000Z
  
        handler_name    : SoundHandler
  
  Output #0, mp4, to 'C:\\Users\\dave\\Documents\\video 2.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      description     : This video is about My Movie
  
      title           : My Movie
  
      encoder         : Lavf58.27.103
  
      Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 1202 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 11988 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-01-15T21:57:04.000000Z
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 74 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-01-15T21:57:04.000000Z
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=    0 fps=0.0 q=-1.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
  
  video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown