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• FFMPEG options for video streaming

  26 février 2014, par YorgZ

  I am trying to use ffmpeg to stream video using ffserver. You will find below the ffserver1.conf file, and the log output from the ffmpeg command.

  One of the errors references presets, and everytime I try to use presets I get the error "File not found, even after copying all the preset files in the current directory.

  Thanks for the help.

  YorgZ

  FFSERVER CONF
  
  
  
  YorgZ-Macbook$cat ffserver1.conf
  
  Port 8090
  
  BindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 4000
  
  CustomLog -
  
  
  
  
  
  <feed>
  
        File feed1.ffm
  
        FileMaxSize 1G
  
        ACL allow 127.0.0.1
  
        ACL allow localhost
  
        ACL allow 10.0.0.0 10.0.255.255
  
  </feed>
  
  
  
  <stream>
  
      Feed feed1.ffm
  
      Format mp4
  
      VideoFrameRate  29.97
  
      VideoBitRate    500
  
      VideoSize   640x352
  
  </stream>
  
  
  
  <stream>
  
      Format status
  
      ACL allow localhost
  
      ACL allow 10.0.0.0 10.0.255.255
  
  </stream>
  
  YorgZ-Macbook$
  
  
  
  FFMPEG COMMAND AND LOG 
  
  
  
   YorgZ-Macbook$./ffmpeg -loglevel debug -i TestStream.mp4  -codec:v libx264 -b:v 500k  -vf "scale=640:352" -r 29.97 -codec:a aac -b:a 128k http://127.0.0.1:8090/feed1.ffm
  
  
  
      ffmpeg version 2.1.3-tessus Copyright (c) 2000-2013 the FFmpeg developers
  
        built on Jan 16 2014 13:50:59 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)
  
        configuration: --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-fontconfig --enable-libfreetype --enable-libass --enable-libbluray --enable-filters --enable-runtime-cpudetect
  
        libavutil      52. 48.101 / 52. 48.101
  
        libavcodec     55. 39.101 / 55. 39.101
  
        libavformat    55. 19.104 / 55. 19.104
  
        libavdevice    55.  5.100 / 55.  5.100
  
        libavfilter     3. 90.100 /  3. 90.100
  
        libswscale      2.  5.101 /  2.  5.101
  
        libswresample   0. 17.104 /  0. 17.104
  
        libpostproc    52.  3.100 / 52.  3.100
  
      Splitting the commandline.
  
      Reading option &#39;-loglevel&#39; ... matched as option &#39;loglevel&#39; (set logging level) with argument &#39;debug&#39;.
  
      Reading option &#39;-i&#39; ... matched as input file with argument &#39;TestStream.mp4&#39;.
  
      Reading option &#39;-codec:v&#39; ... matched as option &#39;codec&#39; (codec name) with argument &#39;libx264&#39;.
  
      Reading option &#39;-b:v&#39; ... matched as option &#39;b&#39; (video bitrate (please use -b:v)) with argument &#39;500k&#39;.
  
      Reading option &#39;-vf&#39; ... matched as option &#39;vf&#39; (set video filters) with argument &#39;scale=640:352&#39;.
  
      Reading option &#39;-r&#39; ... matched as option &#39;r&#39; (set frame rate (Hz value, fraction or abbreviation)) with argument &#39;29.97&#39;.
  
      Reading option &#39;-codec:a&#39; ... matched as option &#39;codec&#39; (codec name) with argument &#39;aac&#39;.
  
      Reading option &#39;-b:a&#39; ... matched as option &#39;b&#39; (video bitrate (please use -b:v)) with argument &#39;128k&#39;.
  
      Reading option &#39;http://127.0.0.1:8090/feed1.ffm&#39; ... matched as output file.
  
      Finished splitting the commandline.
  
      Parsing a group of options: global .
  
      Applying option loglevel (set logging level) with argument debug.
  
      Successfully parsed a group of options.
  
      Parsing a group of options: input file TestStream.mp4.
  
      Successfully parsed a group of options.
  
      Opening an input file: TestStream.mp4.
  
      [mov,mp4,m4a,3gp,3g2,mj2 @ 0x10201a200] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
      [mov,mp4,m4a,3gp,3g2,mj2 @ 0x10201a200] ISO: File Type Major Brand: mp42
  
      [mov,mp4,m4a,3gp,3g2,mj2 @ 0x10201a200] File position before avformat_find_stream_info() is 33783
  
      [mov,mp4,m4a,3gp,3g2,mj2 @ 0x10201a200] All info found
  
      [mov,mp4,m4a,3gp,3g2,mj2 @ 0x10201a200] File position after avformat_find_stream_info() is 64138
  
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#39;TestStream.mp4&#39;:
  
        Metadata:
  
          major_brand     : mp42
  
          minor_version   : 0
  
          compatible_brands: isommp42
  
          creation_time   : 2014-02-17 10:17:06
  
        Duration: 00:01:40.10, start: 0.000000, bitrate: 582 kb/s
  
          Stream #0:0(und), 15, 1/30000: Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1001/60000, 483 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
  
          Metadata:
  
            handler_name    : VideoHandler
  
          Stream #0:1(und), 1, 1/44100: Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 95 kb/s (default)
  
          Metadata:
  
            creation_time   : 2014-02-17 10:17:06
  
            handler_name    : IsoMedia File Produced by Google, 5-11-2011
  
      Successfully opened the file.
  
      Parsing a group of options: output file http://127.0.0.1:8090/feed1.ffm.
  
      Applying option codec:v (codec name) with argument libx264.
  
      Applying option b:v (video bitrate (please use -b:v)) with argument 500k.
  
      Applying option vf (set video filters) with argument scale=640:352.
  
      Applying option r (set frame rate (Hz value, fraction or abbreviation)) with argument 29.97.
  
      Applying option codec:a (codec name) with argument aac.
  
      Applying option b:a (video bitrate (please use -b:v)) with argument 128k.
  
      Successfully parsed a group of options.
  
      Opening an output file: http://127.0.0.1:8090/feed1.ffm.
  
      [ffm @ 0x102037200] Format ffm probed with size=2048 and score=101
  
      [AVIOContext @ 0x101d04fe0] Statistics: 4096 bytes read, 0 seeks
  
      Mon Feb 24 11:53:05 2014 127.0.0.1 - - [GET] "/feed1.ffm HTTP/1.1" 200 4175
  
      Successfully opened the file.
  
      detected 8 logical cores
  
      [graph 0 input from stream 0:1 @ 0x101d05a20] Setting &#39;time_base&#39; to value &#39;1/44100&#39;
  
      [graph 0 input from stream 0:1 @ 0x101d05a20] Setting &#39;sample_rate&#39; to value &#39;44100&#39;
  
      [graph 0 input from stream 0:1 @ 0x101d05a20] Setting &#39;sample_fmt&#39; to value &#39;fltp&#39;
  
      [graph 0 input from stream 0:1 @ 0x101d05a20] Setting &#39;channel_layout&#39; to value &#39;0x3&#39;
  
      [graph 0 input from stream 0:1 @ 0x101d05a20] tb:1/44100 samplefmt:fltp samplerate:44100 chlayout:0x3
  
      [audio format for output stream 0:0 @ 0x102d004e0] Setting &#39;sample_fmts&#39; to value &#39;s16&#39;
  
      [audio format for output stream 0:0 @ 0x102d004e0] Setting &#39;sample_rates&#39; to value &#39;22050&#39;
  
      [audio format for output stream 0:0 @ 0x102d004e0] Setting &#39;channel_layouts&#39; to value &#39;0x4&#39;
  
      [audio format for output stream 0:0 @ 0x102d004e0] auto-inserting filter &#39;auto-inserted resampler 0&#39; between the filter &#39;Parsed_anull_0&#39; and the filter &#39;audio format for output stream 0:0&#39;
  
      [AVFilterGraph @ 0x101d03ea0] query_formats: 4 queried, 6 merged, 3 already done, 0 delayed
  
      0.500000 0.500000 
  
      [auto-inserted resampler 0 @ 0x102d00ca0] ch:2 chl:stereo fmt:fltp r:44100Hz -> ch:1 chl:mono fmt:s16 r:22050Hz
  
      [graph 1 input from stream 0:0 @ 0x103b003a0] Setting &#39;video_size&#39; to value &#39;640x360&#39;
  
      [graph 1 input from stream 0:0 @ 0x103b003a0] Setting &#39;pix_fmt&#39; to value &#39;0&#39;
  
      [graph 1 input from stream 0:0 @ 0x103b003a0] Setting &#39;time_base&#39; to value &#39;1/30000&#39;
  
      [graph 1 input from stream 0:0 @ 0x103b003a0] Setting &#39;pixel_aspect&#39; to value &#39;1/1&#39;
  
      [graph 1 input from stream 0:0 @ 0x103b003a0] Setting &#39;sws_param&#39; to value &#39;flags=2&#39;
  
      [graph 1 input from stream 0:0 @ 0x103b003a0] Setting &#39;frame_rate&#39; to value &#39;30000/1001&#39;
  
      [graph 1 input from stream 0:0 @ 0x103b003a0] w:640 h:360 pixfmt:yuv420p tb:1/30000 fr:30000/1001 sar:1/1 sws_param:flags=2
  
      [scaler for output stream 0:1 @ 0x103b00900] Setting &#39;w&#39; to value &#39;640&#39;
  
      [scaler for output stream 0:1 @ 0x103b00900] Setting &#39;h&#39; to value &#39;352&#39;
  
      [scaler for output stream 0:1 @ 0x103b00900] Setting &#39;flags&#39; to value &#39;0x4&#39;
  
      [scaler for output stream 0:1 @ 0x103b00900] w:640 h:352 flags:&#39;0x4&#39; interl:0
  
      [format @ 0x103b00dc0] compat: called with args=[yuv420p|yuvj420p|yuv422p|yuvj422p|yuv444p|yuvj444p|nv12|nv16]
  
      [format @ 0x103b00dc0] Setting &#39;pix_fmts&#39; to value &#39;yuv420p|yuvj420p|yuv422p|yuvj422p|yuv444p|yuvj444p|nv12|nv16&#39;
  
      [AVFilterGraph @ 0x102d00fc0] query_formats: 5 queried, 4 merged, 0 already done, 0 delayed
  
      [scaler for output stream 0:1 @ 0x103b00900] w:640 h:360 fmt:yuv420p sar:1/1 -> w:640 h:352 fmt:yuv420p sar:44/45 flags:0x4
  
      [libx264 @ 0x102049800] broken ffmpeg default settings detected
  
      [libx264 @ 0x102049800] use an encoding preset (e.g. -vpre medium)
  
      [libx264 @ 0x102049800] preset usage: -vpre <speed> -vpre <profile>
  
      [libx264 @ 0x102049800] speed presets are listed in x264 --help
  
      [libx264 @ 0x102049800] profile is optional; x264 defaults to high
  
      Output #0, ffm, to &#39;http://127.0.0.1:8090/feed1.ffm&#39;:
  
        Metadata:
  
          major_brand     : mp42
  
          minor_version   : 0
  
          compatible_brands: isommp42
  
          creation_time   : now
  
          Stream #0:0(und), 0, 1/1000000: Audio: aac (libvo_aacenc), 22050 Hz, mono, s16, 128 kb/s (default)
  
          Metadata:
  
            creation_time   : 2014-02-17 10:17:06
  
            handler_name    : IsoMedia File Produced by Google, 5-11-2011
  
          Stream #0:1(und), 0, 1/1000000: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x352 [SAR 44:45 DAR 16:9], 1001/30000, q=2-31, 500 kb/s, 1000k tbn, 29.97 tbc (default)
  
          Metadata:
  
            handler_name    : VideoHandler
  
      Stream mapping:
  
        Stream #0:1 -> #0:0 (aac -> libvo_aacenc)
  
        Stream #0:0 -> #0:1 (h264 -> libx264)
  
      Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height
  
      [AVIOContext @ 0x101d04fe0] Statistics: 0 seeks, 0 writeouts
  
      [AVIOContext @ 0x101d03fa0] Statistics: 65536 bytes read, 0 seeks
  
      Mon Feb 24 11:53:05 2014 127.0.0.1 - - [POST] "/feed1.ffm HTTP/1.1" 200 0
  
      YorgZ-Macbook$
  
  </profile></speed>

• Solving The XVD Puzzle

  15 avril 2012, par Multimedia Mike — General, multimedi archaeology, silicon valley, vg2, xvd, zygo

  I downloaded a multimedia file a long time ago (at least, I strongly suspected it was a multimedia file which is why I downloaded it). It went by the name of ‘lamborghini_850kbps.vg2′. I have had it in my collection for at least 7 years. I couldn’t remember where I found it. I downloaded it before it occurred to me to take notes about this sort of stuff.

  I found myself staring at the file again today and Googled the filename. This led me to a few Japanese sites which also contained working URLs for a few more .vg2 samples. Some other clues led me to a Russian language forum where someone had linked to a site that had Win32 codec modules that could process the files. The site was defunct but the Internet Archive Wayback Machine kept a copy for me, as well as copies of several more .vg2 samples from a defunct Japanese site previously involved with this codec.

  Sometimes this internet technology works really well. But I digress.

  Anyway, through all this, I finally found a clue : XVD. and wouldn’t you know, there is already a basic page on the MultimediaWiki describing the technology. In fact, while VG2 is a custom container, the MultimediaWiki states that the video component has a FourCC of VGMV, and there is already a file named VGMV.avi in the root V-codecs/ samples directory, something I vow to correct (that’s a big pet peeve of mine– putting samples in the root V-codecs/ or A-codecs/ directories).

  XVD… XVD… XVD… why does that sound so familiar ? Oh, of course ; there is a company named XVD and they have an office in the Bay Area which I have passed on numerous occasions, like this morning :

  
  <

  Someone originally connected with the multimedia technology in question operates a website which contains an unofficial history of the XVD tech. At first, I was wondering if the technology was completely defunct (and should therefore be open sourced). But if XVD’s solutions page (dated 2010) is to be believed, the technology is still in service, and purported to be better than H.264 and VC-1 : “The current generation of XVD video compression technology provides better video quality at any given data rate than standards-based codecs (H.264 or VC-1) with four times lower encoding complexity (when compared with H.264 Main Profile).”

  If they say so. For my part, I’m just happy that I have finally figured out what this lamborghini_850kbps.vg2 is so that I can properly catalog it on the samples site, which I have now done, along with other samples and various codecs modules.

  This episode reminds me that there’s a branch office of Zygo Corporation close to my home (though the headquarters are far, far away). The companies you see in Silicon Valley. Anyway, long-time open source multimedia hackers will no doubt recognize Zygo from the ZyGo FourCC & video codec transported in QuickTime files that was almost decode-able using an H.263 decoder.

  
  
  

  I may never learn what Zygo’s core competency actually is, but I will always remember their multimedia tech every time I run past their office.

• I have a log file with RTP packets : now what ?

  9 mai 2012, par Brannon

  I have a log file with RTP packets coming off of a black box device. I also have a corresponding SDP file (RTSP DESCRIBE) for that. I need to convert this file into some kind of playable video file. Can I pass these two files to FFMpeg or VLC or something else and have it mux that data into something playable ?

  As an alternate plan, I can loop through the individual packets in code and do something with each packet. However, it seems that there are existing libraries for parsing this data. And it seems to do it by hand would be asking for a large project. Is there some kind of video file format that is a pretty raw mix of SDP and RTP ? Thanks for your time.

  Is there a way for FFmpeg or VLC to open an SDP file and then get their input packets through STDIN ?

  I generally use C#, but I could use C if necessary.

  Update 1 : Here is my unworking code. I'm trying to get some kind of output to play with ffplay, but I haven't had any luck yet. It gives me invalid data errors. It does go over all the data correctly as far as I can tell. My output is nearly as big as my input (at about 4MB).

      public class RtpPacket2
  
      {
  
          public byte VersionPXCC;
  
          public byte MPT;
  
          public ushort Sequence; // length?
  
          public uint Timestamp;
  
          public uint Ssrc;
  
          public int Version { get { return VersionPXCC >> 6; } }
  
          public bool Padding { get { return (VersionPXCC & 32) > 0; } }
  
          public bool Extension { get { return (VersionPXCC & 16) > 0; } }
  
          public int CsrcCount { get { return VersionPXCC & 0xf; } } // ItemCount
  
          public bool Marker { get { return (MPT & 0x80) > 0; } }
  
          public int PayloadType { get { return MPT & 0x7f; } } // PacketType
  
      }
  
  
  
  
  
      static void Main(string[] args)
  
      {
  
          if (args.Length != 2)
  
          {
  
              Console.WriteLine("Usage: <input rtp="rtp" file="file" /> <output 3gp="3gp" file="file">");
  
              return;
  
          }
  
          var inputFile = args[0];
  
          var outputFile = args[1];
  
          if(File.Exists(outputFile)) File.Delete(outputFile);
  
  
  
          // FROM the SDP : fmtp 96 profile-level-id=4D0014;packetization-mode=0
  
          var sps = Convert.FromBase64String("Z0LAHoiLUFge0IAAA4QAAK/IAQ=="); //      BitConverter.ToString(sps)  "67-42-C0-1E-88-8B-50-58-1E-D0-80-00-03-84-00-00-AF-C8-01"  string
  
          var pps = Convert.FromBase64String("aM44gA=="); //      BitConverter.ToString(pps)  "68-CE-38-80"   string
  
          var sep = new byte[] { 00, 00, 01 };
  
  
  
          var packet = new RtpPacket2();
  
          bool firstFrame = true;
  
          using (var input = File.OpenRead(inputFile))
  
          using (var reader = new BinaryReader(input))
  
          using (var output = File.OpenWrite(outputFile))
  
          {
  
              //output.Write(header, 0, header.Length);
  
              output.Write(sep, 0, sep.Length);
  
              output.Write(sps, 0, sps.Length);
  
              output.Write(sep, 0, sep.Length);
  
              output.Write(pps, 0, pps.Length);
  
              output.Write(sep, 0, sep.Length);
  
              while (input.Position &lt; input.Length)
  
              {
  
                  var size = reader.ReadInt16();
  
                  packet.VersionPXCC = reader.ReadByte();
  
                  packet.MPT = reader.ReadByte();
  
                  packet.Sequence = reader.ReadUInt16();
  
                  packet.Timestamp = reader.ReadUInt32();
  
                  packet.Ssrc = reader.ReadUInt32();
  
                  if (packet.PayloadType == 96)
  
                  {
  
                      if (packet.CsrcCount > 0 || packet.Extension) throw new NotImplementedException();
  
  
  
                      var header0 = reader.ReadByte();
  
                      var header1 = reader.ReadByte();
  
  
  
                      var fragmentType = header0 &amp; 0x1F; // should be 28 for video
  
                      if(fragmentType != 28) // 28 for video?
  
                      {
  
                          input.Position += size - 14;
  
                          continue;
  
                      }
  
                      var nalUnit = header0 &amp; ~0x1F;
  
                      var nalType = header1 &amp; 0x1F;
  
                      var start = (header1 &amp; 0x80) > 0;
  
                      var end = (header1 &amp; 0x40) > 0;
  
  
  
                      if(firstFrame)
  
                      {
  
                          output.Write(sep, 0, sep.Length);
  
                          output.WriteByte((byte)(nalUnit | fragmentType));
  
                          firstFrame = false;
  
                      }
  
  
  
                      for (int i = 0; i &lt; size - 14; i++)
  
                          output.WriteByte(reader.ReadByte());
  
                      if (packet.Marker)
  
                          firstFrame = true;
  
                  }
  
                  else input.Position += size - 12;
  
              }
  
          }
  
      }
  
  </output>