title: ffmpeg issue with output from video stream
body: <p>I have two video streams from which I'd like to take one frame of each, both of them are RTSP. I'm using the same FFMPEG instruction for both of them but changing the URL of the stream, the first one works but the second one throws the error:</p>
  
  <blockquote>
    <p>method SETUP failed: 455 Method Not Valid In This State</p>
  </blockquote>
  
  <p>Can anyone tell me what could be the reason for this error and how to solve it?</p>
  
  <p><strong>WORKING</strong></p>
  
  <pre><code>ffmpeg -ss 1 -i rtsp://streamreader:trudat55@69.84.126.216:88/videoMain -an -vcodec mjpeg -vframes 1 -aspect 16:9 -q:v 2 -y test.jpg
  
  ffmpeg version 2.8.2 Copyright (c) 2000-2015 the FFmpeg developers
    built with gcc 4.9.2 (Debian 4.9.2-10)
    configuration: --enable-gpl --enable-avresample --enable-libopencore-amrnb --enable-libx264 --enable-libxvid --enable-postproc --enable-version3 --enable-shared --enable-pic --extra-ldexeflags=-pie
    libavutil      54. 31.100 / 54. 31.100
    libavcodec     56. 60.100 / 56. 60.100
    libavformat    56. 40.101 / 56. 40.101
    libavdevice    56.  4.100 / 56.  4.100
    libavfilter     5. 40.101 /  5. 40.101
    libavresample   2.  1.  0 /  2.  1.  0
    libswscale      3.  1.101 /  3.  1.101
    libswresample   1.  2.101 /  1.  2.101
    libpostproc    53.  3.100 / 53.  3.100
  [rtsp @ 0x55a60a0a7420] UDP timeout, retrying with TCP
  Guessed Channel Layout for  Input Stream #0.1 : mono
  Input #0, rtsp, from 'rtsp://streamreader:password@69.84.126.216:88/videoMain':
    Metadata:
      title           : IP Camera Video
      comment         : videoMain
    Duration: N/A, start: 0.200044, bitrate: N/A
      Stream #0:0: Video: h264 (Baseline), yuv420p, 640x480, 50 tbr, 90k tbn, 180k tbc
      Stream #0:1: Audio: pcm_mulaw, 8000 Hz, 1 channels, s16, 64 kb/s
  [swscaler @ 0x55a60a102460] deprecated pixel format used, make sure you did set range correctly
  Output #0, image2, to 'test.jpg':
    Metadata:
      title           : IP Camera Video
      comment         : videoMain
      encoder         : Lavf56.40.101
      Stream #0:0: Video: mjpeg, yuvj420p(pc), 640x480 [SAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 50 fps, 50 tbn, 50 tbc
      Metadata:
        encoder         : Lavc56.60.100 mjpeg
  Stream mapping:
    Stream #0:0 -&gt; #0:0 (h264 (native) -&gt; mjpeg (native))
  Press [q] to stop, [?] for help
  frame=    1 fps=0.5 q=2.0 Lsize=N/A time=00:00:00.02 bitrate=N/A dup=1 drop=1    
  video:66kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  </code></pre>
  
  <p><strong>NOT WORKING</strong></p>
  
  <pre><code>ffmpeg -ss 1 -i rtsp://camaras.corredorautomotriz.cl:554/live.sdp -an -vcodec mjpeg -vframes 1 -aspect 16:9 -q:v 2 -y test.jpg
  
  ffmpeg version 2.8.2 Copyright (c) 2000-2015 the FFmpeg developers
    built with gcc 4.9.2 (Debian 4.9.2-10)
    configuration: --enable-gpl --enable-avresample --enable-libopencore-amrnb --enable-libx264 --enable-libxvid --enable-postproc --enable-version3 --enable-shared --enable-pic --extra-ldexeflags=-pie
    libavutil      54. 31.100 / 54. 31.100
    libavcodec     56. 60.100 / 56. 60.100
    libavformat    56. 40.101 / 56. 40.101
    libavdevice    56.  4.100 / 56.  4.100
    libavfilter     5. 40.101 /  5. 40.101
    libavresample   2.  1.  0 /  2.  1.  0
    libswscale      3.  1.101 /  3.  1.101
    libswresample   1.  2.101 /  1.  2.101
    libpostproc    53.  3.100 / 53.  3.100
  [rtsp @ 0x55b98f2de420] UDP timeout, retrying with TCP
  [rtsp @ 0x55b98f2de420] method SETUP failed: 455 Method Not Valid In This State
  [rtsp @ 0x55b98f2de420] Could not find codec parameters for stream 0 (Video: mjpeg, none(bt470bg/unknown/unknown)): unspecified size
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  Input #0, rtsp, from 'rtsp://camaras.corredorautomotriz.cl:554/live.sdp':
    Metadata:
      title           : RTSP server
    Duration: N/A, start: 0.000000, bitrate: N/A
      Stream #0:0: Video: mjpeg, none(bt470bg/unknown/unknown), 90k tbr, 90k tbn, 90k tbc
      Stream #0:1: Data: none
  Output #0, image2, to 'test.jpg':
  Output file #0 does not contain any stream
  </code></pre>