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• gdb not stopping at even trivial breakpoints

  18 novembre 2015, par baruch

  I am trying to debug ffplay (a debug build) compiled using mingw-w64 on msys2 on Windows 7 64bit. I tried setting breakpoints using gdb, and they seem to be set fine, but the program does not stop. So i tried issuing start, and again it didn’t stop. I tried manually setting a breakpoint at main, but it still didn’t stop. I verified that main is found, and it is. Here is a portion of the session. Any explanation what might cause this ?

  (gdb) start
  
  Temporary breakpoint 1 at 0x140013f7c: file C:/Users/bubaruch/Documents/projects/ffmpeg/ffmpeg/ffplay.c, line 3756.
  
  Starting program: C:\Users\bubaruch\Documents\projects\ffmpeg\b2\ffplay_g.exe
  
  [New Thread 7752.0x275c]
  
  ffplay version 2.8.git Copyright (c) 2003-2015 the FFmpeg developers
  
    built with gcc 5.2.0 (Rev4, Built by MSYS2 project)
  
    configuration: --disable-doc --disable-optimizations
  
    libavutil      55.  5.100 / 55.  5.100
  
    libavcodec     57. 15.100 / 57. 15.100
  
    libavformat    57. 14.100 / 57. 14.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 15.100 /  6. 15.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
  Simple media player
  
  usage: ffplay [options] input_file
  
  
  
  An input file must be specified
  
  Use -h to get full help or, even better, run 'man ffplay'
  
  [Inferior 1 (process 7752) exited with code 01]
  
  
  
  (gdb) l main
  
  3748       return 1;
  
  3749    }
  
  3750
  
  3751    /* Called from the main */
  
  3752    int main(int argc, char **argv)
  
  3753    {
  
  3754        int flags;
  
  3755        VideoState *is;
  
  3756        char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
  
  3757
  
  
  
  (gdb) b main
  
  Breakpoint 2 at 0x140013f7c: file C:/Users/bubaruch/Documents/projects/ffmpeg/ffmpeg/ffplay.c, line 3756.
  
  
  
  (gdb) r
  
  Starting program: C:\Users\bubaruch\Documents\projects\ffmpeg\b2\ffplay_g.exe
  
  [New Thread 15388.0x3278]
  
  ffplay version 2.8.git Copyright (c) 2003-2015 the FFmpeg developers
  
    built with gcc 5.2.0 (Rev4, Built by MSYS2 project)
  
    configuration: --disable-doc --disable-optimizations
  
    libavutil      55.  5.100 / 55.  5.100
  
    libavcodec     57. 15.100 / 57. 15.100
  
    libavformat    57. 14.100 / 57. 14.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 15.100 /  6. 15.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
  Simple media player
  
  usage: ffplay [options] input_file
  
  
  
  An input file must be specified
  
  Use -h to get full help or, even better, run 'man ffplay'
  
  [Inferior 1 (process 15388) exited with code 01]

• FFMPEG error while receiving rtsp stream

  8 avril 2014, par Pawel Rutka

  I got error with receiving rtsp stream from IPCam Edimax IC-3030 and I don't know what to do. Can anyone help me or show me a way to solution ?

  /home/prog12# ffplay "rtsp://192.168.1.7/ipcam_h264.sdp"
  
  ffplay version 2.1.4 Copyright (c) 2003-2014 the FFmpeg developers
  
  built on Mar 22 2014 18:16:53 with gcc 4.8 (Ubuntu/Linaro 4.8.1-10ubuntu9)
  
  configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-      libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable- libxvid --enable-x11grab --enable-libvpx --enable-libmp3lame
  
  
  
  ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Access denied
  
  
  
   [rtsp @ 0xb0c006c0] UDP timeout, retrying with TCPsq=    0B f=0/0   
  
   [rtsp @ 0xb0c006c0] method PAUSE failed: 501 Not Implemented
  
   [rtsp @ 0xb0c006c0] Could not find codec parameters for stream 0 (Video: h264): unspecified size
  
   Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
   Input #0, rtsp, from 'rtsp://192.168.1.7/ipcam_h264.sdp':
  
   Metadata:
  
  title           : IPCam
  
   Duration: N/A, bitrate: 64 kb/s
  
  Stream #0:0: Video: h264, 90k tbr, 90k tbn, 180k tbc
  
  Stream #0:1: Audio: pcm_alaw, 8000 Hz, 1 channels, s16, 64 kb/s
  
  SDL_OpenAudio (1 channels): 
  
  No more channel combinations to try, audio open failed
  
  [rtsp @ 0xb0c006c0] UDP timeout, retrying with TCPsq=    0B f=0/0   
  
  [rtsp @ 0xb0c006c0] method PAUSE failed: 501 Not Implemented
  
  [rtsp @ 0xb0c006c0] UDP timeout, retrying with TCPsq=    0B f=0/0   
  
  [rtsp @ 0xb0c006c0] method PAUSE failed: 501 Not Implementedf=0/0   
  
  [rtsp @ 0xb0c006c0] UDP timeout, retrying with TCPsq=    0B f=0/0   
  
  [rtsp @ 0xb0c006c0] method PAUSE failed: 501 Not Implemented
  
  nan M-V:    nan fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   
  
  nan M-V:    nan fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   
  
  nan M-V:    nan fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   
  
  nan M-V:    nan fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   
  
  nan M-V:    nan fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   

  Thats the output.

  EDIT

  ps ax| grep -i pulse 
  
  8904 ?        S<l></l>usr/bin/pulseaudio --start --log-target=syslog
  
  10369 pts/1    S+     0:00 grep --color=auto -i pulse

  And for new command :

  sudo ffplay -video_size 640x480 "rtsp://192.168.1.7/ipcam_h264.sdp"
  
  ffplay version 2.1.4 Copyright (c) 2003-2014 the FFmpeg developers
  
  built on Mar 22 2014 18:16:53 with gcc 4.8 (Ubuntu/Linaro 4.8.1-10ubuntu9)
  
  configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab --enable-libvpx --enable-libmp3lame
  
  
  
  Option video_size not found.aq=    0KB vq=    0KB sq=    0B f=0/0   

• configure : require pkg-config for libvorbis

  4 juillet 2017, par Ricardo Constantino

  configure : require pkg-config for libvorbis
  libvorbis comes with pkg-config files since at least v1.0.1, way back in 2003.
  We need the two checks for vorbis and vorbisenc because we use functions from
  
  both and Xiph considers them separate libraries.
  The check is inverted (vorbis first then vorbisenc) because add_extralibs()
  
  prepends to EXTRALIBS instead of appending. For both shared and static linking
  
  the order didn't seem to matter anyway, testing with MinGW.
  Signed-off-by : Derek Buitenhuis <derek.buitenhuis@gmail.com>
  

  • [DH] configure