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  • Specifying audio/video for a multiple stream/multiple file setup using ffmpeg

    31 mai 2018, par Robert Smith

    Folks, I have the following ffmpeg command :

    ffmpeg
    
    -i video1a -i video2a -i video3a -i video4a
    
    -i video1b -i video2b -i video3b -i video4b
    
    -i video1c
    
    -filter_complex "
    
        nullsrc=size=640x480 [base];
    
        [0:v] setpts=PTS-STARTPTS+   0/TB, scale=320x240 [1a];
    
        [1:v] setpts=PTS-STARTPTS+ 300/TB, scale=320x240 [2a];
    
        [2:v] setpts=PTS-STARTPTS+ 400/TB, scale=320x240 [3a];
    
        [3:v] setpts=PTS-STARTPTS+ 400/TB, scale=320x240 [4a];
    
        [4:v] setpts=PTS-STARTPTS+2500/TB, scale=320x240 [1b];
    
        [5:v] setpts=PTS-STARTPTS+ 800/TB, scale=320x240 [2b];
    
        [6:v] setpts=PTS-STARTPTS+ 700/TB, scale=320x240 [3b];
    
        [7:v] setpts=PTS-STARTPTS+ 800/TB, scale=320x240 [4b];
    
        [8:v] setpts=PTS-STARTPTS+3000/TB, scale=320x240 [1c];
    
        [base][1a] overlay=eof_action=pass [o1];
    
        [o1][1b] overlay=eof_action=pass [o1];
    
        [o1][1c] overlay=eof_action=pass:shortest=1 [o1];
    
        [o1][2a] overlay=eof_action=pass:x=320 [o2];
    
        [o2][2b] overlay=eof_action=pass:x=320 [o2];
    
        [o2][3a] overlay=eof_action=pass:y=240 [o3];
    
        [o3][3b] overlay=eof_action=pass:y=240 [o3];
    
        [o3][4a] overlay=eof_action=pass:x=320:y=240[o4];
    
        [o4][4b] overlay=eof_action=pass:x=320:y=240"
    
    -c:v libx264 output.mp4

    I have just found out something regarding the files I will be processing with above command : that some mp4 files are video/audio, some mp4 files are audio alone and some mp4 files are video alone. I am already able to determine which ones have audio/video/both using ffprobe. My question is how do I modify above command to state what each file contains (video/audio/both).

    This is the scenario of which file has video/audio/both :

    video   time
    
======= =========
    
Area 1:
    
video1a    audio
    
video1b     both
    
video1c    video
    

    
Area 2:
    
video2a    video
    
video2b    audio
    

    
Area 3:
    
video3a    video
    
video3b    audio
    

    
Area 4:
    
video4a    video
    
video4b    both

    My question is how to correctly modify command above to specify what the file has (audio/video/both). Thank you.

    Update #1

    I ran test as follows :

    -i "video1a.flv"
    
-i "video1b.flv"
    
-i "video1c.flv"
    
-i "video2a.flv"
    
-i "video3a.flv"
    
-i "video4a.flv"
    
-i "video4b.flv"
    
-i "video4c.flv"
    
-i "video4d.flv"
    
-i "video4e.flv"
    

    
-filter_complex 
    

    
nullsrc=size=640x480[base];
    
[0:v]setpts=PTS-STARTPTS+120/TB,scale=320x240[1a];
    
[1:v]setpts=PTS-STARTPTS+3469115/TB,scale=320x240[1b];
    
[2:v]setpts=PTS-STARTPTS+7739299/TB,scale=320x240[1c];
    
[5:v]setpts=PTS-STARTPTS+4390466/TB,scale=320x240[4a];
    
[6:v]setpts=PTS-STARTPTS+6803937/TB,scale=320x240[4b];
    
[7:v]setpts=PTS-STARTPTS+8242005/TB,scale=320x240[4c];
    
[8:v]setpts=PTS-STARTPTS+9811577/TB,scale=320x240[4d];
    
[9:v]setpts=PTS-STARTPTS+10765190/TB,scale=320x240[4e];
    
[base][1a]overlay=eof_action=pass[o1];
    
[o1][1b]overlay=eof_action=pass[o1];
    
[o1][1c]overlay=eof_action=pass:shortest=1[o1];
    
[o1][4a]overlay=eof_action=pass:x=320:y=240[o4];
    
[o4][4b]overlay=eof_action=pass:x=320:y=240[o4];
    
[o4][4c]overlay=eof_action=pass:x=320:y=240[o4];
    
[o4][4d]overlay=eof_action=pass:x=320:y=240[o4];
    
[o4][4e]overlay=eof_action=pass:x=320:y=240;
    
[0:a]asetpts=PTS-STARTPTS+120/TB,aresample=async=1,apad[a1a];
    
[1:a]asetpts=PTS-STARTPTS+3469115/TB,aresample=async=1,apad[a1b];
    
[2:a]asetpts=PTS-STARTPTS+7739299/TB,aresample=async=1[a1c];
    
[3:a]asetpts=PTS-STARTPTS+82550/TB,aresample=async=1,apad[a2a];
    
[4:a]asetpts=PTS-STARTPTS+2687265/TB,aresample=async=1,apad[a3a];
    
[a1a][a1b][a1c][a2a][a3a]amerge=inputs=5
    

    
-c:v libx264 -c:a aac -ac 2 output.mp4

    This is the stream data from ffmpeg :

    Input #0
    
  Stream #0:0: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
    
  Stream #0:1: Audio: nellymoser, 11025 Hz, mono, flt
    

    
Input #1
    
  Stream #1:0: Audio: nellymoser, 11025 Hz, mono, flt
    
  Stream #1:1: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
    

    
Input #2
    
  Stream #2:0: Audio: nellymoser, 11025 Hz, mono, flt
    
  Stream #2:1: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
    

    
Input #3
    
  Stream #3:0: Audio: nellymoser, 11025 Hz, mono, flt
    

    
Input #4
    
  Stream #4:0: Audio: nellymoser, 11025 Hz, mono, flt
    

    
Input #5
    
  Stream #5:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    

    
Input #6
    
  Stream #6:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    

    
Input #7
    
  Stream #7:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    

    
Input #8
    
  Stream #8:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    

    
Input #9
    
  Stream #9:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn

    This is the error :

    Stream mapping:
    
  Stream #0:0 (vp6f) -> setpts
    
  Stream #0:1 (nellymoser) -> asetpts
    

    
  Stream #1:0 (nellymoser) -> asetpts
    
  Stream #1:1 (vp6f) -> setpts
    

    
  Stream #2:0 (nellymoser) -> asetpts
    
  Stream #2:1 (vp6f) -> setpts
    

    
  Stream #3:0 (nellymoser) -> asetpts
    

    
  Stream #4:0 (nellymoser) -> asetpts
    

    
  Stream #5:0 (vp6f) -> setpts
    

    
  Stream #6:0 (vp6f) -> setpts
    

    
  Stream #7:0 (vp6f) -> setpts
    

    
  Stream #8:0 (vp6f) -> setpts
    

    
  Stream #9:0 (vp6f) -> setpts
    

    
  overlay -> Stream #0:0 (libx264)
    
  amerge -> Stream #0:1 (aac)
    
Press [q] to stop, [?] for help
    

    
Enter command: <target>|all <time>|-1 <command>[ <argument>]
    

    
Parse error, at least 3 arguments were expected, only 1 given in string 'ho Oscar'
    
[Parsed_amerge_39 @ 0aa147c0] No channel layout for input 1
    
    Last message repeated 1 times
    
[AVFilterGraph @ 05e01900] The following filters could not choose their formats: Parsed_amerge_39
    
Consider inserting the (a)format filter near their input or output.
    
Error reinitializing filters!
    
Failed to inject frame into filter network: I/O error
    
Error while processing the decoded data for stream #4:0
    
Conversion failed!
    
</argument></command></time></target>

    Update #2

    Would it be like this :

    -i "video1a.flv"
    
-i "video1b.flv"
    
-i "video1c.flv"
    
-i "video2a.flv"
    
-i "video3a.flv"
    
-i "video4a.flv"
    
-i "video4b.flv"
    
-i "video4c.flv"
    
-i "video4d.flv"
    
-i "video4e.flv"
    

    
-filter_complex 
    

    
nullsrc=size=640x480[base];
    
[0:v]setpts=PTS-STARTPTS+120/TB,scale=320x240[1a];
    
[1:v]setpts=PTS-STARTPTS+3469115/TB,scale=320x240[1b];
    
[2:v]setpts=PTS-STARTPTS+7739299/TB,scale=320x240[1c];
    
[5:v]setpts=PTS-STARTPTS+4390466/TB,scale=320x240[4a];
    
[6:v]setpts=PTS-STARTPTS+6803937/TB,scale=320x240[4b];
    
[7:v]setpts=PTS-STARTPTS+8242005/TB,scale=320x240[4c];
    
[8:v]setpts=PTS-STARTPTS+9811577/TB,scale=320x240[4d];
    
[9:v]setpts=PTS-STARTPTS+10765190/TB,scale=320x240[4e];
    
[base][1a]overlay=eof_action=pass[o1];
    
[o1][1b]overlay=eof_action=pass[o1];
    
[o1][1c]overlay=eof_action=pass:shortest=1[o1];
    
[o1][4a]overlay=eof_action=pass:x=320:y=240[o4];
    
[o4][4b]overlay=eof_action=pass:x=320:y=240[o4];
    
[o4][4c]overlay=eof_action=pass:x=320:y=240[o4];
    
[o4][4d]overlay=eof_action=pass:x=320:y=240[o4];
    
[o4][4e]overlay=eof_action=pass:x=320:y=240;
    
[0:a]asetpts=PTS-STARTPTS+120/TB,aresample=async=1,pan=1c|c0=c0,apad[a1a];
    
[1:a]asetpts=PTS-STARTPTS+3469115/TB,aresample=async=1,pan=1c|c0=c0,apad[a1b];
    
[2:a]asetpts=PTS-STARTPTS+7739299/TB,aresample=async=1,pan=1c|c0=c0[a1c];
    
[3:a]asetpts=PTS-STARTPTS+82550/TB,aresample=async=1,pan=1c|c0=c0,apad[a2a];
    
[4:a]asetpts=PTS-STARTPTS+2687265/TB,aresample=async=1,pan=1c|c0=c0,apad[a3a];
    
[a1a][a1b][a1c][a2a][a3a]amerge=inputs=5
    

    
-c:v libx264 -c:a aac -ac 2 output.mp4

    Update #3

    Now getting this error :

    Stream mapping:
    
  Stream #0:0 (vp6f) -> setpts
    
  Stream #0:1 (nellymoser) -> asetpts
    
  Stream #1:0 (nellymoser) -> asetpts
    
  Stream #1:1 (vp6f) -> setpts
    
  Stream #2:0 (nellymoser) -> asetpts
    
  Stream #2:1 (vp6f) -> setpts
    
  Stream #3:0 (nellymoser) -> asetpts
    
  Stream #4:0 (nellymoser) -> asetpts
    
  Stream #5:0 (vp6f) -> setpts
    
  Stream #6:0 (vp6f) -> setpts
    
  Stream #7:0 (vp6f) -> setpts
    
  Stream #8:0 (vp6f) -> setpts
    
  Stream #9:0 (vp6f) -> setpts
    
  overlay -> Stream #0:0 (libx264)
    
  amerge -> Stream #0:1 (aac)
    
Press [q] to stop, [?] for help
    

    
Enter command: <target>|all <time>|-1 <command>[ <argument>]
    

    
Parse error, at least 3 arguments were expected, only 1 given in string 'ho Oscar'
    
[Parsed_amerge_44 @ 0a9808c0] No channel layout for input 1
    
[Parsed_amerge_44 @ 0a9808c0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
    
[Parsed_pan_27 @ 07694800] Pure channel mapping detected: 0
    
[Parsed_pan_31 @ 07694a80] Pure channel mapping detected: 0
    
[Parsed_pan_35 @ 0a980300] Pure channel mapping detected: 0
    
[Parsed_pan_38 @ 0a980500] Pure channel mapping detected: 0
    
[Parsed_pan_42 @ 0a980780] Pure channel mapping detected: 0
    
[libx264 @ 06ad78c0] using SAR=1/1
    
[libx264 @ 06ad78c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 06ad78c0] profile High, level 3.0
    
[libx264 @ 06ad78c0] 264 - core 155 r2901 7d0ff22 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=15 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    canSeekToEnd    : false
    
    encoder         : Lavf58.16.100
    
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    
    Metadata:
    
      encoder         : Lavc58.19.102 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 11025 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc58.19.102 aac
    
...
    
...
    
Error while processing the decoded data for stream #1:1
    
[libx264 @ 06ad78c0] frame I:133   Avg QP: 8.58  size:  6481
    
[libx264 @ 06ad78c0] frame P:8358  Avg QP:17.54  size:  1386
    
[libx264 @ 06ad78c0] frame B:24582 Avg QP:24.27  size:   105
    
[libx264 @ 06ad78c0] consecutive B-frames:  0.6%  0.5%  0.7% 98.1%
    
[libx264 @ 06ad78c0] mb I  I16..4: 78.3% 16.1%  5.6%
    
[libx264 @ 06ad78c0] mb P  I16..4:  0.3%  0.7%  0.1%  P16..4:  9.6%  3.0%  1.4%  0.0%  0.0%    skip:84.9%
    
[libx264 @ 06ad78c0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  2.9%  0.1%  0.0%  direct: 0.2%  skip:96.8%  L0:47.0% L1:49.0% BI: 4.0%
    
[libx264 @ 06ad78c0] 8x8 transform intra:35.0% inter:70.1%
    
[libx264 @ 06ad78c0] coded y,uvDC,uvAC intra: 36.8% 43.7% 27.3% inter: 1.6% 3.0% 0.1%
    
[libx264 @ 06ad78c0] i16 v,h,dc,p: 79%  8%  4%  9%
    
[libx264 @ 06ad78c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 20% 12%  3%  6%  8%  6%  5%  7%
    
[libx264 @ 06ad78c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 22%  9%  4%  6%  7%  5%  5%  4%
    
[libx264 @ 06ad78c0] i8c dc,h,v,p: 62% 15% 16%  7%
    
[libx264 @ 06ad78c0] Weighted P-Frames: Y:0.6% UV:0.5%
    
[libx264 @ 06ad78c0] ref P L0: 65.4% 12.3% 14.3%  7.9%  0.0%
    
[libx264 @ 06ad78c0] ref B L0: 90.2%  7.5%  2.3%
    
[libx264 @ 06ad78c0] ref B L1: 96.3%  3.7%
    
[libx264 @ 06ad78c0] kb/s:90.81
    
[aac @ 06ad8480] Qavg: 65519.970
    
[aac @ 06ad8480] 2 frames left in the queue on closing
    
Conversion failed!
    
</argument></command></time></target>

  • FFmpeg avcodec_decode_video2 decode RTSP H264 HD-video packet to video picture with error

    29 mai 2018, par Nguyen Ba Thi

    I used FFmpeg library version 4.0 to have simple C++ program, in witch is a thread to receive RTSP H264 video data from IP-camera and display it in program window.

    Code of this thread is follow :

    DWORD WINAPI GrabbProcess(LPVOID lpParam)
    
// Grabbing thread
    
{
    
  DWORD i;
    
  int ret = 0, nPacket=0;
    
  FILE *pktFile;
    
  // Open video file
    
  pFormatCtx = avformat_alloc_context();
    
  if(avformat_open_input(&amp;pFormatCtx, nameVideoStream, NULL, NULL)!=0)
    
      fGrabb=-1; // Couldn't open file
    
  else
    
  // Retrieve stream information
    
  if(avformat_find_stream_info(pFormatCtx, NULL)&lt;0)
    
      fGrabb=-2; // Couldn't find stream information
    
  else
    
  {
    
      // Find the first video stream
    
      videoStream=-1;
    
      for(i=0; inb_streams; i++)
    
        if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
    
        {
    
          videoStream=i;
    
          break;
    
        }
    
      if(videoStream==-1)
    
          fGrabb=-3; // Didn't find a video stream
    
      else
    
      {
    
          // Get a pointer to the codec context for the video stream
    
          pCodecCtxOrig=pFormatCtx->streams[videoStream]->codec;
    
          // Find the decoder for the video stream
    
          pCodec=avcodec_find_decoder(pCodecCtxOrig->codec_id);
    
          if(pCodec==NULL)
    
              fGrabb=-4; // Codec not found
    
          else
    
          {
    
              // Copy context
    
              pCodecCtx = avcodec_alloc_context3(pCodec);
    
              if(avcodec_copy_context(pCodecCtx, pCodecCtxOrig) != 0)
    
                  fGrabb=-5; // Error copying codec context
    
              else
    
              {
    
                  // Open codec
    
                  if(avcodec_open2(pCodecCtx, pCodec, NULL)&lt;0)
    
                      fGrabb=-6; // Could not open codec
    
                  else
    
                  // Allocate video frame for input
    
                  pFrame=av_frame_alloc();
    
                  // Determine required buffer size and allocate buffer
    
                  numBytes=avpicture_get_size(pCodecCtx->pix_fmt, pCodecCtx->width,
    
                      pCodecCtx->height);
    
                  buffer=(uint8_t *)av_malloc(numBytes*sizeof(uint8_t));
    
                  // Assign appropriate parts of buffer to image planes in pFrame
    
                  // Note that pFrame is an AVFrame, but AVFrame is a superset
    
                  // of AVPicture
    
                  avpicture_fill((AVPicture *)pFrame, buffer, pCodecCtx->pix_fmt,
    
                      pCodecCtx->width, pCodecCtx->height);
    

    
                  // Allocate video frame for display
    
                  pFrameRGB=av_frame_alloc();
    
                  // Determine required buffer size and allocate buffer
    
                  numBytes=avpicture_get_size(AV_PIX_FMT_RGB24, pCodecCtx->width,
    
                      pCodecCtx->height);
    
                  bufferRGB=(uint8_t *)av_malloc(numBytes*sizeof(uint8_t));
    
                  // Assign appropriate parts of buffer to image planes in pFrameRGB
    
                  // Note that pFrameRGB is an AVFrame, but AVFrame is a superset
    
                  // of AVPicture
    
                  avpicture_fill((AVPicture *)pFrameRGB, bufferRGB, AV_PIX_FMT_RGB24,
    
                      pCodecCtx->width, pCodecCtx->height);
    
                  // initialize SWS context for software scaling to FMT_RGB24
    
                  sws_ctx_to_RGB = sws_getContext(pCodecCtx->width,
    
                      pCodecCtx->height,
    
                      pCodecCtx->pix_fmt,
    
                      pCodecCtx->width,
    
                      pCodecCtx->height,
    
                      AV_PIX_FMT_RGB24,
    
                      SWS_BILINEAR,
    
                      NULL,
    
                      NULL,
    
                      NULL);
    

    
                  // Allocate video frame (grayscale YUV420P) for processing
    
                  pFrameYUV=av_frame_alloc();
    
                  // Determine required buffer size and allocate buffer
    
                  numBytes=avpicture_get_size(AV_PIX_FMT_YUV420P, pCodecCtx->width,
    
                      pCodecCtx->height);
    
                  bufferYUV=(uint8_t *)av_malloc(numBytes*sizeof(uint8_t));
    
                  // Assign appropriate parts of buffer to image planes in pFrameYUV
    
                  // Note that pFrameYUV is an AVFrame, but AVFrame is a superset
    
                  // of AVPicture
    
                  avpicture_fill((AVPicture *)pFrameYUV, bufferYUV, AV_PIX_FMT_YUV420P,
    
                      pCodecCtx->width, pCodecCtx->height);
    
                  // initialize SWS context for software scaling to FMT_YUV420P
    
                  sws_ctx_to_YUV = sws_getContext(pCodecCtx->width,
    
                      pCodecCtx->height,
    
                      pCodecCtx->pix_fmt,
    
                      pCodecCtx->width,
    
                      pCodecCtx->height,
    
                      AV_PIX_FMT_YUV420P,
    
                      SWS_BILINEAR,
    
                      NULL,
    
                      NULL,
    
                      NULL);
    
                RealBsqHdr.biWidth = pCodecCtx->width;
    
                RealBsqHdr.biHeight = -pCodecCtx->height;
    
              }
    
          }
    
      }
    
  }
    
  while ((fGrabb==1)||(fGrabb==100))
    
  {
    
      // Grabb a frame
    
      if (av_read_frame(pFormatCtx, &amp;packet) >= 0)
    
      {
    
        // Is this a packet from the video stream?
    
        if(packet.stream_index==videoStream)
    
        {
    
            // Decode video frame
    
            int len = avcodec_decode_video2(pCodecCtx, pFrame, &amp;frameFinished, &amp;packet);
    
            nPacket++;
    
            // Did we get a video frame?
    
            if(frameFinished)
    
            {
    
                // Convert the image from its native format to YUV
    
                sws_scale(sws_ctx_to_YUV, (uint8_t const * const *)pFrame->data,
    
                    pFrame->linesize, 0, pCodecCtx->height,
    
                    pFrameYUV->data, pFrameYUV->linesize);
    
                // Convert the image from its native format to RGB
    
                sws_scale(sws_ctx_to_RGB, (uint8_t const * const *)pFrame->data,
    
                    pFrame->linesize, 0, pCodecCtx->height,
    
                    pFrameRGB->data, pFrameRGB->linesize);
    
                HDC hdc=GetDC(hWndM);
    
                SetDIBitsToDevice(hdc, 0, 0, pCodecCtx->width, pCodecCtx->height,
    
                    0, 0, 0, pCodecCtx->height,pFrameRGB->data[0], (LPBITMAPINFO)&amp;RealBsqHdr, DIB_RGB_COLORS);
    
                ReleaseDC(hWndM,hdc);
    
                av_frame_unref(pFrame);
    
            }
    
        }
    
        // Free the packet that was allocated by av_read_frame
    
        av_free_packet(&amp;packet);
    
      }
    
   }
    
   // Free the org frame
    
  av_frame_free(&amp;pFrame);
    
  // Free the RGB frame
    
  av_frame_free(&amp;pFrameRGB);
    
  // Free the YUV frame
    
  av_frame_free(&amp;pFrameYUV);
    

    
  // Close the codec
    
  avcodec_close(pCodecCtx);
    
  avcodec_close(pCodecCtxOrig);
    

    
  // Close the video file
    
  avformat_close_input(&amp;pFormatCtx);
    
  avformat_free_context(pFormatCtx);
    

    
  if (fGrabb==1)
    
      sprintf(tmpstr,"Grabbing Completed %d frames", nCntTotal);
    
  else if (fGrabb==2)
    
      sprintf(tmpstr,"User break on %d frames", nCntTotal);
    
  else if (fGrabb==3)
    
      sprintf(tmpstr,"Can't Grabb at frame %d", nCntTotal);
    
  else if (fGrabb==-1)
    
      sprintf(tmpstr,"Couldn't open file");
    
  else if (fGrabb==-2)
    
      sprintf(tmpstr,"Couldn't find stream information");
    
  else if (fGrabb==-3)
    
      sprintf(tmpstr,"Didn't find a video stream");
    
  else if (fGrabb==-4)
    
      sprintf(tmpstr,"Codec not found");
    
  else if (fGrabb==-5)
    
      sprintf(tmpstr,"Error copying codec context");
    
  else if (fGrabb==-6)
    
      sprintf(tmpstr,"Could not open codec");
    
  i=(UINT) fGrabb;
    
  fGrabb=0;
    
  SetWindowText(hWndM,tmpstr);
    
  ExitThread(i);
    
  return 0;
    
}
    
// End Grabbing thread  

    When program receive RTSP H264 video data with resolution 704x576 then decoded video pictures are OK. When receive RTSP H264 HD-video data with resolution 1280x720 it look like that first video picture is decoded OK and then video pictures are decoded but always with some error.

    Please help me to fix this problem !

    Here is problems brief :
    I have an IP camera model HI3518E_50H10L_S39 (product of China).
    Camera can provide H264 video stream both at resolution 704x576 (with RTSP URI "rtsp ://192.168.1.18:554/user=admin_password=tlJwpbo6_channel=1_stream=1.sdp ?real_stream") or 1280x720 (with RTSP URI "rtsp ://192.168.1.18:554/user=admin_password=tlJwpbo6_channel=1_stream=0.sdp ?real_stream").
    Using FFplay utility I can access and display them with good picture quality.
    For testing of grabbing from this camera, I have a simple (above mentioned) program in VC-2005. In "Grabbing thread" program use FFmpeg library version 4.0 for opening camera RTSP stream, retrieve stream information, find the first video stream... and prepare some variables.
    Center of this thread is loop : Grab a frame (function av_read_frame) - Decode it if it’s video (function avcodec_decode_video2) - Convert to RGB format (function sws_scale) - Display to program window (GDI function SetDIBitsToDevice).
    When proram run with camera RTSP stream at resolution 704x576, I have good video picture. Here is a sample :
    704x576 sample
    When program run with camera RTSP stream at resolution 1280x720, first video picture is good :
    First good at res.1280x720
    but then not good :
    not good at res.1280x720
    Its seem to be my FFmpeg function call to avcodec_decode_video2 can’t fully decode certain packet for some reasons.

  • python ff-mpeg not working on VM

    2 août 2013, par Bob

    I have two Windows 2008 R2 64 bit servers with two different host providers (GoDaddy and company B). My python script runs successfully on GoDaddy's server. It doesn't run successfully on the server with company B.

    I installed the same software on both servers :

    • Python 2.7 for Windows 32 bit
    • NumPY module
    • SetupTools
    • EchoNest API for Windows

    The company B server is giving me an error related to an executable called en-ffmpeg.exe that uses the python ff-mpeg module. The exact error message is

    [dv @ 0x1449690]Can't determine profile of DV input stream.
    C :\Music\song1.mp3 : Error while opening file

    The song.mp3 file exists. I installed the latest Windows updates on the server with Company B but still I get the error. I believe the error is because something is not configured properly on this server (missing libraries or drivers ?). However, I don't know what that is !

    Please help :)

    UPDATED TO INCLUDE COMMAND AND ERROR OUTPUT FROM FFMPEG

    COMMAND :

    c :\Python27>en-ffmpeg -i "C :\Music\song1.mp3" -y -ac 2 -ar 44100
    "c :\users\x07 dmini 1\x07ppdata\local\temp\x02\tmpax82jf.wav"

    FULL ERROR :

    FFmpeg version SVN-r17988-Komeil, Copyright (c) 2000-2009 Fabrice Bellard, et al
    
.
    
  configuration: --enable-memalign-hack --extra-cflags=-fno-common --enable-stat
    
ic --disable-shared --disable-debug --enable-gpl --enable-nonfree --enable-avfil
    
ter --enable-avfilter-lavf --enable-avisynth --enable-postproc --enable-pthreads
    
 --enable-libamr-nb --enable-libamr-wb --enable-libgsm --enable-libfaac --enable
    
-libfaad --enable-libmp3lame --enable-libschroedinger --enable-libspeex --enable
    
-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
    
  libavutil     50. 0. 0 / 50. 0. 0
    
  libavcodec    52.21. 0 / 52.21. 0
    
  libavformat   52.31. 1 / 52.31. 1
    
  libavdevice   52. 1. 0 / 52. 1. 0
    
  libavfilter    0. 4. 0 /  0. 4. 0
    
  libswscale     0. 7. 1 /  0. 7. 1
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
  built on Mar 15 2009 18:16:31, gcc: 4.3.0 20080305 (alpha-testing) mingw-20080
    
502
    
[dv @ 0x1449690]Can&#39;t determine profile of DV input stream.
    
C:\\Music\\song1.mp3: Error while opening file

    I also tried removing the double back slashes from the command but got the same error.

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