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• ffmpeg works but gstreamer does not work for rtsp camera

  11 janvier 2021, par Jinmo Chong

  I'm using Nvidia Jetson Tx2 device.

  


  With the following command, I can connect and capture an image with ffmpeg.

  


  $/usr/bin/ffmpeg -y -frames 1 snapshot.png -rtsp_transport tcp -i rtsp://admin:admin@192.168.10.131/1/profile


  


  


  


  ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/aarch64-linux-gnu --incdir=/usr/include/aarch64-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
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, rtsp, from 'rtsp://admin:admin@192.168.10.131/1/profile':
  Metadata:
    title           : SDP Descrption
    comment         : SDP Description
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuvj420p(pc, bt709, progressive), 1920x1080, 25 fps, 30 tbr, 90k tbn, 50 tbc
    Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
    Stream #0:2: Data: none
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> png (native))
Press [q] to stop, [?] for help
[swscaler @ 0x55a8f70c70] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x55a8f70c70] No accelerated colorspace conversion found from yuv420p to rgb24.
Output #0, image2, to 'snapshot.png':
  Metadata:
    title           : SDP Descrption
    comment         : SDP Description
    encoder         : Lavf57.83.100
    Stream #0:0: Video: png, rgb24, 1920x1080, q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc
    Metadata:
      encoder         : Lavc57.107.100 png
frame=    1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.03 bitrate=N/A dup=1 drop=1 speed=0.066x    
video:1982kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  


  


  



  But with gstreamer, (I'm using version 1.14.5) I am not able to access the rtsp feed.

  


  $gst-launch-1.0 uridecodebin uri=rtsp://admin:admin@192.168.10.131/1/profile ! fakesink


  


  


  


  Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Progress: (open) Opening Stream
Progress: (connect) Connecting to rtsp://admin:admin@192.168.10.131/1/profile
Progress: (open) Retrieving server options
Progress: (open) Retrieving media info
Progress: (request) SETUP stream 0
Progress: (request) SETUP stream 1
Progress: (request) SETUP stream 2
ERROR: from element /GstPipeline:pipeline0/GstURIDecodeBin:uridecodebin0/GstRTSPSrc:source: Could not read from resource.
Additional debug info:
gstrtspsrc.c(5917): gst_rtsp_src_receive_response (): /GstPipeline:pipeline0/GstURIDecodeBin:uridecodebin0/GstRTSPSrc:source:
Could not receive message. (Timeout while waiting for server response)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

  


  


  



  I have also removed gstreamer-ugly pkg but it still does not work !

  


  ref : https://forums.developer.nvidia.com/t/rtsp-gstreamer-simple-recieve-and-store-in-file/157535/12

  


  Let me know if you can help me ! Thanks !

  


• ffmpeg in PHP : Resizing image works, but getting a 404 when trying to load resized image ?

  13 décembre 2016, par Eric David Sartor

  PHP :

  if ($output = shell_exec("ffmpeg -i localhost/video/tools/poster.png -vf scale=32:32 localhost/video/tools/poster_small.png 2>&1") !== NULL)
  
      echo $output;
  
  
  
  echo "Original:<br /><img src="http://stackoverflow.com/feeds/tag/poster.png" style='max-width: 300px; max-height: 300px' /><br /><br />Resize:<br /><img src="http://stackoverflow.com/feeds/tag/poster_small.png" style='max-width: 300px; max-height: 300px' />";

  So I’m trying to have an image upload form that creates a smaller version of the uploaded image after the upload is verified. All that works fine, and when I run this command with ffmpeg, the $output is 1. That obviously means that it isn’t returning NULL, which means ffmpeg is functioning in theory...but here’s the weird part...

  I’m echoing the images out into the HTML to visually verify if they worked, and what I get (for the resized image) is a 32x32 image container, but the image doesn’t load (404 in the dev console), which to me makes no sense. If the image container is 32x32, that means that the resize must’ve worked because that’s the size I told it to be in the ffmpeg command, but if the page isn’t loading the image, how did it even get the information that the image needed to be 32x32 ? I didn’t set that in the HTML/CSS anywhere...what’s going on here ?

  I’m running this on Windows in a XAMPP server. I’ve installed ffmpeg and verified it is working in the Windows command prompt. All the files are in localhost/video/tools/, other than the ffmpeg files of course, which are in localhost/ffmpeg/.

  A screenshot of the HTML output : http://ericsartor.ca/Capture.PNG

• FFmpeg works out mp3 duration with file input, but fails with pipe ?

  16 août 2012, par user1599160

  I am trying to get PCM data from mp3's using ffmpeg, but the files are stored on a database, gridfs, so I am trying to use pipes to give ffmpeg the data with some sucess, however there is one file which ffmpeg handles correctlt if fed the filename as an input, and incorrectly when given the file as a pipe :( any idea why ?

  ffmpeg -i - -f s16le -acodec pcm_s16le output.raw < testMp3s/test-corrupt.mp3 

  gives

  ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  
  built on Jun  9 2012 13:50:13 with gcc 4.7.0 20120505 (prerelease)
  
  configuration: --prefix=/usr --enable-libmp3lame --enable-libvorbis --enable-libxvid --        enable-libx264 --enable-libvpx --enable-libtheora --enable-libgsm --enable-libspeex -- enable-postproc --enable-shared --enable-x11grab --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libschroedinger --enable-libopenjpeg --enable-librtmp --enable-libpulse --enable-libv4l2 --enable-gpl --enable-version3 --enable-runtime-cpudetect --  disable-debug --disable-static
  
  libavutil      51. 54.100 / 51. 54.100
  
  libavcodec     54. 23.100 / 54. 23.100
  
  libavformat    54.  6.100 / 54.  6.100
  
  libavdevice    54.  0.100 / 54.  0.100
  
  libavfilter     2. 77.100 /  2. 77.100
  
  libswscale      2.  1.100 /  2.  1.100
  
  libswresample   0. 15.100 /  0. 15.100
  
  libpostproc    52.  0.100 / 52.  0.100
  
  [mp3 @ 0x16d7100] Unknown attached picture mimetype: JPG, skipping.
  
  [mp3 @ 0x16d7100] max_analyze_duration 5000000 reached at 5015510
  
  [mp3 @ 0x16d7100] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from 'pipe:':
  
  Metadata:
  
  album           : FreshNewMusik.Com
  
  encoded_by      : iTunes 10.6.3
  
  title           : No Lie (Freestyle)
  
  artist          : Lil Wayne
  
  album_artist    : Lil Wayne
  
  genre           : Hip-Hop/Rap
  
  TT3             : twitter.com/jakejarvis
  
  date            : 2012
  
  Duration: N/A, start: 0.000000, bitrate: 320 kb/s
  
  Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 320 kb/s

  Yet

  ffmpeg -i testMp3s/test-corrupt.mp3 -f s16le -acodec pcm_s16le output.raw 

  gives

  ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  
  built on Jun  9 2012 13:50:13 with gcc 4.7.0 20120505 (prerelease)
  
  configuration: --prefix=/usr --enable-libmp3lame --enable-libvorbis --enable-libxvid --    enable-libx264 --enable-libvpx --enable-libtheora --enable-libgsm --enable-libspeex --enable-postproc --enable-shared --enable-x11grab --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libschroedinger --enable-libopenjpeg --enable-librtmp --enable-libpulse --enable-libv4l2 --enable-gpl --enable-version3 --enable-runtime-cpudetect --disable-debug --disable-static
  
  libavutil      51. 54.100 / 51. 54.100
  
  libavcodec     54. 23.100 / 54. 23.100
  
  libavformat    54.  6.100 / 54.  6.100
  
  libavdevice    54.  0.100 / 54.  0.100
  
  libavfilter     2. 77.100 /  2. 77.100
  
  libswscale      2.  1.100 /  2.  1.100
  
  libswresample   0. 15.100 /  0. 15.100
  
  libpostproc    52.  0.100 / 52.  0.100
  
  [mp3 @ 0xf33100] Unknown attached picture mimetype: JPG, skipping.
  
  [mp3 @ 0xf33100] max_analyze_duration 5000000 reached at 5015510
  
  [mp3 @ 0xf33100] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from 'testMp3s/test-corrupt.mp3':
  
  Metadata:
  
  album           : FreshNewMusik.Com
  
  encoded_by      : iTunes 10.6.3
  
  title           : No Lie (Freestyle)
  
  artist          : Lil Wayne
  
  album_artist    : Lil Wayne
  
  genre           : Hip-Hop/Rap
  
  TT3             : twitter.com/jakejarvis
  
  date            : 2012
  
  Duration: 00:02:33.86, start: 0.000000, bitrate: 320 kb/s
  
  Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 320 kb/s

  How do I get the duration with the pipe ? (the data is available on memory in a python app)