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• sdp : Simplify parsing/conversion of H264 extradata

  3 octobre 2014, par Martin Storsjö

  sdp : Simplify parsing/conversion of H264 extradata
  By using ff_avc_write_annexb_extradata instead of the h264_mp4toannexb
  
  BSF, the code for doing the conversion itself is kept much shorter,
  
  there’s less state to restore at the end, we don’t risk leaving the
  
  AVCodecContext in an inconsistent state if returning early due to
  
  errors, etc.
  Also add a missing free if the base64 encoding fails.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/sdp.c

• rtmp can be played by ffplay, but video.js not

  8 novembre 2019, par Cat Tom

  I just run

  ffprobe -show_frames -i rtmp ://127.0.0.1:1935/live/0

  and I got :

  ffprobe version 4.1 Copyright (c) 2007-2018 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
  
    configuration: --enable-shared --enable-libx264 --enable-sdl --enable-gpl
  
    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
  
  [h264 @ 0xf5e400] Invalid NAL unit 0, skipping.
  
      Last message repeated 13 times
  
  [H264 Decoder @ 0xfb4e40] Broken frame packetizing
  
  [h264 @ 0xf5e400] top block unavailable for requested intra mode
  
  [h264 @ 0xf5e400] error while decoding MB 112 0
  
  [H264 Decoder @ 0xfb4e40] Broken frame packetizing
  
  [h264 @ 0xf5e400] illegal short term buffer state detected
  
  [h264 @ 0xf5e400] negative number of zero coeffs at 111 0
  
  [h264 @ 0xf5e400] error while decoding MB 111 0
  
  [H264 Decoder @ 0xfb4e40] Broken frame packetizing
  
  [h264 @ 0xf5e400] illegal short term buffer state detected
  
  [h264 @ 0xf5e400] Frame num change from 0 to 1
  
  [h264 @ 0xf5e400] decode_slice_header error
  
  [h264 @ 0xf5e400] Frame num change from 0 to 2
  
  [h264 @ 0xf5e400] decode_slice_header error
  
  [h264 @ 0xf5e400] illegal short term buffer state detected
  
  [H264 Decoder @ 0xfb4e40] Broken frame packetizing
  
  [h264 @ 0xf5e400] illegal short term buffer state detected
  
  [h264 @ 0xf5e400] Invalid NAL unit 8, skipping.
  
      Last message repeated 1 times
  
  [h264 @ 0xf5e400] Frame num change from 0 to 1
  
  [h264 @ 0xf5e400] decode_slice_header error
  
  [H264 Decoder @ 0xfb4e40] Broken frame packetizing
  
  [h264 @ 0xf5e400] Frame num change from 0 to 1
  
  [h264 @ 0xf5e400] decode_slice_header error
  
  [h264 @ 0xf5e400] Frame num change from 0 to 1
  
  [h264 @ 0xf5e400] decode_slice_header error
  
  [h264 @ 0xf5e400] concealing 3282 DC, 3282 AC, 3282 MV errors in I frame
  
  [h264 @ 0xf5e400] illegal short term buffer state detected
  
  [h264 @ 0xf5e400] Frame num change from 1 to 2
  
  [h264 @ 0xf5e400] decode_slice_header error
  
      Last message repeated 1 times
  
  [h264 @ 0xf5e400] Frame num change from 1 to 2
  
  [h264 @ 0xf5e400] decode_slice_header error
  
      Last message repeated 1 times
  
  [h264 @ 0xf5e400] Frame num change from 1 to 2
  
  [h264 @ 0xf5e400] decode_slice_header error
  
      Last message repeated 2 times
  
  [h264 @ 0xf5e400] Frame num change from 2 to 3
  
  [h264 @ 0xf5e400] decode_slice_header error
  
      Last message repeated 1 times

  It can be played with ffplay, but in video.js, it shows FLASH : rtmpconnectfailure ; I googled the message Frame num change from but didn’t get useful information, so how can I debug this and find a solution ?
  Any help would be appreciated, thank you !

• Could not load or assembly or one of its dependencies

  29 juin 2017, par Prathibha Chiranthana

  I am using Aforge.net frame work for doing image processing work.
  I have add ’AForge.Video.FFMPEG.dll’ as a referance to my project.
  I am using VS2012 and 32 bit build target.
  When Buiding i get

   System.IO.FileNotFoundException was unhandled
  
    HResult=-2147024770
  
    Message=Could not load file or assembly 'AForge.Video.FFMPEG.dll' or one of its dependencies. The specified module could not be found.
  
    Source=VideoReadere
  
    FileName=AForge.Video.FFMPEG.dll
  
    FusionLog=""
  
    StackTrace:
  
         at VideoReadere.Form1..ctor()
  
         at VideoReadere.Program.Main() in c:\Users\Prabad\Documents\Visual Studio 2012\Projects\VideoReadere\VideoReadere\Program.cs:line 19
  
         at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
  
         at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
  
         at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
  
         at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
  
         at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
  
         at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
  
         at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
  
         at System.Threading.ThreadHelper.ThreadStart()
  
    InnerException: 

  my code for that is occur exception

   using System;
  
  using System.Collections.Generic;
  
  using System.Linq;
  
  using System.Threading.Tasks;
  
  using System.Windows.Forms;
  
  
  
  namespace VideoReadere
  
  {
  
      static class Program
  
      {
  
          /// <summary>
  
          /// The main entry point for the application.
  
          /// </summary>
  
          [STAThread]
  
          static void Main()
  
          {
  
              Application.EnableVisualStyles();
  
              Application.SetCompatibleTextRenderingDefault(false);
  
  //here below line give exception
  
              Application.Run(new Form1());
  
          }
  
      }
  
  }