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• How to transfer video as rtp stream with least delay by FFmpeg

  2 décembre 2020, par Yasushi2019

  I use AXIS M1045-LW supporting rtsp/http access, and my Windows 10 PC can access to the camera through LAN.

  


  I would like to transfer the video as rtp with keeping H.264 codec which is supported by the camera.

  


  ---

  


  Image

  


  [Camera] == (rtsp or http) ==> [FFmpeg on Win10] == (rtp) ==>

  


  ---

  


  When I accessed the camera through Google Chrome on my Win10 PC, there is only 1 or 2 sec delay.

  


  However, when I tried access by the following command, I found over 10 sec delay.

  


  How could I reduce the delay as much as possible ?

  


  ---

  


  [Windows Command Prompt A ] (sender)

  


  
C :\Users\xxxx\ffmpeg-4.3.1-2020-11-19-full_build\bin>ffmpeg -re -i rtsp ://xxx:xxx@xxx.xxx.xxx.xxx/axis-media/media.amp -codec:v copy -f rtp rtp ://localhost:30002 -sdp_file stream.sdp

ffmpeg version 4.3.1-2020-11-19-full_build-www.gyan.dev Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10.2.0 (Rev5, Built by MSYS2 project)
  configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-lzma —enable-libsnappy —enable-zlib —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libdav1d —enable-libzvbi —enable-librav1e —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libaom —enable-libopenjpeg —enable-libvpx —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libmfx —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, rtsp, from 'rtsp ://xxx:xxx@xxx.xxx.xxx.xxx/axis-media/media.amp' :
  Metadata :
    title : Session streamed with GStreamer
    comment : rtsp-server
  Duration : N/A, start : 2.979633, bitrate : N/A
    Stream #0:0 : Video : h264 (Baseline), yuvj420p(pc, bt709, progressive), 320x240 [SAR 1:1 DAR 4:3], 2 fps, 25 tbr, 90k tbn, 4 tbc
Output #0, rtp, to 'rtp ://localhost:30002' :
  Metadata :
    title : Session streamed with GStreamer
    comment : rtsp-server
    encoder : Lavf58.45.100
    Stream #0:0 : Video : h264 (Baseline), yuvj420p(pc, bt709, progressive), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 2 fps, 25 tbr, 90k tbn, 2 tbc
Stream mapping :
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -224986 ; changing to 0. This may result in incorrect timestamps in the output file.
[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -178194 ; changing to 0. This may result in incorrect timestamps in the output file.
[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -134998 ; changing to 0. This may result in incorrect timestamps in the output file.
[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -88201 ; changing to 0. This may result in incorrect timestamps in the output file.
[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -45002 ; changing to 0. This may result in incorrect timestamps in the output file.
frame=   89 fps=2.1 q=-1.0 size=     142kB time=00:00:43.01 bitrate=  27.0kbits/s speed=   1x


  


  [Windows Command Prompt B ] (receiver)

  


  
C :\Users\xxx\ffmpeg-4.3.1-2020-11-19-full_build\bin>ffplay -protocol_whitelist "file,udp,rtp" stream.sdp

ffplay version 4.3.1-2020-11-19-full_build-www.gyan.dev Copyright (c) 2003-2020 the FFmpeg developers
  built with gcc 10.2.0 (Rev5, Built by MSYS2 project)
  configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-lzma —enable-libsnappy —enable-zlib —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libdav1d —enable-libzvbi —enable-librav1e —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libaom —enable-libopenjpeg —enable-libvpx —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libmfx —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
[sdp @ 000001832f4ecec0] decoding for stream 0 failed    0B f=0/0
Input #0, sdp, from 'stream.sdp' :
  Metadata :
    title : Session streamed with GStreamer
  Duration : N/A, bitrate : N/A
    Stream #0:0 : Video : h264 (Baseline), yuvj420p(pc, bt709, progressive), 320x240 [SAR 1:1 DAR 4:3], 2 fps, 2 tbr, 90k tbn, 4 tbc
[swscaler @ 0000018336868d00] deprecated pixel format used, make sure you did set range correctly
 127.52 M-V : -0.021 fd=  12 aq=    0KB vq=   11KB sq=    0B f=0/0


  


• Converting series of images with ffmpeg results in black video [migrated]

  27 avril 2013, par Marco Gagliardi

  I've just downloaded ffmpeg since it seems to perfectly match my needs (make a video from a set of pictures). I'm currently playing around with some examples just to get started and there's something weird happening that I can't explain.
  I'm trying this command (provided in the official documentation) :

  ffmpeg -f image2 -pattern_type glob -i 'foo-*.jpeg' -r 12 -s WxH foo.avi

  on a data set of 10 jpg pictures (of course I changed the pattern with '*.jpg'). The video seems to be encoded correctly but it's simply too fast to be sure about that (anyway it stops on the last frame that corresponds to the last picture). In order to get a longer video i thought to low the frame rate from 12 to 1 (one sec each picture) or 0.5 (2 sec each one) and so on.. no way ! with low rate values even if the video is played the pictures are simply not displayed. The player (VLC in my case) just shows a blank/empty video for a few seconds.

  Am I making something wrong or have I misunderstood the -r parameter ? Is it something related to codecs involved ? Finally.. How can i get each picture displayed for 1 or 2 seconds ?

  Here's the output :

  MacBook-Pro$ ffmpeg -f image2 -pattern_type glob -i '*.jpg' -r 1 -s 200x300 foo.avi
  
  ffmpeg version N-52517-g1e4f75d Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Apr 27 2013 19:41:11 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
  
    configuration: --disable-yasm
  
    libavutil      52. 27.101 / 52. 27.101
  
    libavcodec     55.  6.100 / 55.  6.100
  
    libavformat    55.  3.100 / 55.  3.100
  
    libavdevice    55.  0.100 / 55.  0.100
  
    libavfilter     3. 61.100 /  3. 61.100
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
  Input #0, image2, from '*.jpg':
  
    Duration: 00:00:00.40, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj422p, 2560x1920 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  File 'foo.avi' already exists. Overwrite ? [y/N] y
  
  Output #0, avi, to 'foo.avi':
  
    Metadata:
  
      ISFT            : Lavf55.3.100
  
      Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 200x300 [SAR 2:1 DAR 4:3], q=2-31, 200 kb/s, 1 tbn, 1 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg -> mpeg4)
  
  Press [q] to stop, [?] for help
  
  frame=    2 fps=0.0 q=2.0 Lsize=      43kB time=00:00:02.00 bitrate= 177.1kbits/s dup=0 drop=8    
  
  video:38kB audio:0kB subtitle:0 global headers:0kB muxing overhead 15.099197%
  
  MacBook-Pro$ 

• ffmpeg : trsfer a h264 video to a series of jpg failed

  21 juin 2018, par 徐立派

  me and a partner are trying to transfer a h264 video to a series of images using ffmpeg with the following command line :

  ffmpeg -i input.h264 -qscale:v 2 output_%03d.jpg

  The input.h264 can be played perfectly on vlc, but the images generated by ffmpeg are just all black. The message in the console are below :

  ffmpeg version 3.4.2-2 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 7 (Ubuntu 7.3.0-16ubuntu2)
  
    configuration: --prefix=/usr --extra-version=2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  [h264 @ 0x562ab2afd9e0] error while decoding MB 54 2, bytestream -16
  
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2afd9e0] error while decoding MB 2 9, bytestream 6907
  
  [h264 @ 0x562ab2afd9e0] concealing 1275 DC, 1275 AC, 1275 MV errors in P frame
  
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2afd9e0] error while decoding MB 27 0, bytestream 5564
  
  [h264 @ 0x562ab2afd9e0] deblocking filter parameters 7 13 out of range
  
  [h264 @ 0x562ab2afd9e0] decode_slice_header error
  
  [h264 @ 0x562ab2afd9e0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  
  [h264 @ 0x562ab2afd9e0] deblocking filter parameters 7 -14 out of range
  
  [h264 @ 0x562ab2afd9e0] decode_slice_header error
  
  [h264 @ 0x562ab2afd9e0] concealing 1387 DC, 1387 AC, 1387 MV errors in P frame
  
  [h264 @ 0x562ab2afd9e0] deblocking filter parameters -7 0 out of range
  
  [h264 @ 0x562ab2afd9e0] decode_slice_header error
  
  [h264 @ 0x562ab2afd9e0] concealing 1413 DC, 1413 AC, 1413 MV errors in P frame
  
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2afd9e0] error while decoding MB 9 0, bytestream 6647
  
  [h264 @ 0x562ab2afd9e0] concealing 1186 DC, 1186 AC, 1186 MV errors in P frame
  
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode
  
  [h264 @ 0x562ab2afd9e0] error while decoding MB 16 9, bytestream 6182
  
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2afd9e0] error while decoding MB 6 18, bytestream 7043
  
  [h264 @ 0x562ab2afd9e0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  
  [h264 @ 0x562ab2afc8c0] Stream #0: not enough frames to estimate rate; consider increasing probesize
  
  Input #0, h264, from 'temp_file.h264':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: h264 (High), yuvj420p(pc, progressive), 1280x720, 29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
  
  Press [q] to stop, [?] for help
  
  [h264 @ 0x562ab2b2f900] error while decoding MB 54 2, bytestream -16
  
  [h264 @ 0x562ab2b2f900] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2b2f900] error while decoding MB 2 9, bytestream 6907
  
  [h264 @ 0x562ab2b2f900] concealing 1275 DC, 1275 AC, 1275 MV errors in P frame
  
  [h264 @ 0x562ab2b01080] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2b01080] error while decoding MB 27 0, bytestream 5564
  
  [h264 @ 0x562ab2b01080] deblocking filter parameters 7 13 out of range
  
  [h264 @ 0x562ab2b01080] decode_slice_header error
  
  [h264 @ 0x562ab2b01080] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  
  [h264 @ 0x562ab2c49240] deblocking filter parameters 7 -14 out of range
  
  [h264 @ 0x562ab2c49240] decode_slice_header error
  
  [h264 @ 0x562ab2c49240] concealing 1387 DC, 1387 AC, 1387 MV errors in P frame
  
  Output #0, image2, to 'output_%03d.jpg':
  
    Metadata:
  
      encoder         : Lavf57.83.100
  
      Stream #0:0: Video: mjpeg, yuvj420p(pc), 1280x720, q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
  
      Metadata:
  
        encoder         : Lavc57.107.100 mjpeg
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
  
  [h264 @ 0x562ab2b7fec0] deblocking filter parameters -7 0 out of range
  
  [h264 @ 0x562ab2b7fec0] decode_slice_header error
  
  [h264 @ 0x562ab2b7fec0] concealing 1413 DC, 1413 AC, 1413 MV errors in P frame
  
  [h264 @ 0x562ab2c15240] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2c15240] error while decoding MB 9 0, bytestream 6647
  
  [h264 @ 0x562ab2c15240] concealing 1186 DC, 1186 AC, 1186 MV errors in P frame
  
  [h264 @ 0x562ab2c315a0] top block unavailable for requested intra mode
  
  [h264 @ 0x562ab2c315a0] error while decoding MB 16 9, bytestream 6182
  
  [h264 @ 0x562ab2c315a0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2c315a0] error while decoding MB 6 18, bytestream 7043
  
  [h264 @ 0x562ab2c315a0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  
  [h264 @ 0x562ab2c447a0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2c447a0] error while decoding MB 12 9, bytestream 6863
  
  [h264 @ 0x562ab2c447a0] concealing 1342 DC, 1342 AC, 1342 MV errors in P frame
  
  [h264 @ 0x562ab2bb9180] top block unavailable for requested intra mode
  
  [h264 @ 0x562ab2bb9180] error while decoding MB 29 18, bytestream 6611
  
  [h264 @ 0x562ab2bb9180] concealing 1405 DC, 1405 AC, 1405 MV errors in P frame
  
  [h264 @ 0x562ab2bd54e0] top block unavailable for requested intra mode
  
  [h264 @ 0x562ab2bd54e0] error while decoding MB 25 9, bytestream 6051
  
  [h264 @ 0x562ab2bd54e0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2bd54e0] error while decoding MB 70 18, bytestream 5088
  
  [h264 @ 0x562ab2bd54e0] concealing 1419 DC, 1419 AC, 1419 MV errors in P frame
  
  [h264 @ 0x562ab2bf1840] top block unavailable for requested intra mode
  
  [h264 @ 0x562ab2bf1840] error while decoding MB 14 9, bytestream 6071
  
  [h264 @ 0x562ab2bf1840] deblocking filter parameters -9 0 out of range
  
  [h264 @ 0x562ab2bf1840] decode_slice_header error
  
  [h264 @ 0x562ab2bf1840] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  
  [h264 @ 0x562ab318e0a0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab318e0a0] error while decoding MB 54 9, bytestream 4422
  
  [h264 @ 0x562ab318e0a0] concealing 1256 DC, 1256 AC, 1256 MV errors in P frame
  
  [h264 @ 0x562ab31aa020] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab31aa020] error while decoding MB 22 9, bytestream 5862
  
  [h264 @ 0x562ab31aa020] concealing 1335 DC, 1335 AC, 1335 MV errors in P frame
  
  [h264 @ 0x562ab2d5a8c0] deblocking filter parameters 7 -4 out of range
  
  [h264 @ 0x562ab2d5a8c0] decode_slice_header error
  
  [h264 @ 0x562ab2d5a8c0] concealing 1430 DC, 1430 AC, 1430 MV errors in P frame
  
  [h264 @ 0x562ab2b2f900] concealing 1319 DC, 1319 AC, 1319 MV errors in P frame
  
  [h264 @ 0x562ab2b01080] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2b01080] error while decoding MB 16 9, bytestream 6218
  
  [h264 @ 0x562ab2b01080] concealing 1416 DC, 1416 AC, 1416 MV errors in P frame
  
  [h264 @ 0x562ab2c49240] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2c49240] error while decoding MB 12 0, bytestream 6854
  
  [h264 @ 0x562ab2c49240] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2c49240] error while decoding MB 2 9, bytestream 7092
  
  [h264 @ 0x562ab2c49240] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  
  [h264 @ 0x562ab2b7fec0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2b7fec0] error while decoding MB 59 0, bytestream 4955
  
  [h264 @ 0x562ab2b7fec0] deblocking filter parameters 7 15 out of range
  
  [h264 @ 0x562ab2b7fec0] decode_slice_header error
  
  [h264 @ 0x562ab2b7fec0] concealing 1430 DC, 1430 AC, 1430 MV errors in P frame
  
  [h264 @ 0x562ab2c15240] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2c15240] error while decoding MB 34 0, bytestream 5338
  
  [h264 @ 0x562ab2c15240] deblocking filter parameters 7 13 out of range
  
  [h264 @ 0x562ab2c15240] decode_slice_header error
  
  [h264 @ 0x562ab2c15240] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  
  [h264 @ 0x562ab2c315a0] concealing 1344 DC, 1344 AC, 1344 MV errors in P frame
  
  [h264 @ 0x562ab2c447a0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x562ab2c447a0] error while decoding MB 49 9, bytestream 4992
  
  [h264 @ 0x562ab2c447a0] concealing 1228 DC, 1228 AC, 1228 MV errors in P frame
  
  frame=   21 fps=0.0 q=2.0 Lsize=N/A time=00:00:00.70 bitrate=N/A speed=1.31x    
  
  video:601kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  However, this command works perfectly fine on random h264 videoes on the internet, so I guess there may be something wrong with our h264 video, but the weird thing is that it can be played by vlc player just fine...

  Any idea what the problem can be ? Any help will be appreciated !