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Sur d’autres sites (5056)

  • ffplay v3.4.1 : Could not initialize SDL - No available video device

    21 juin 2021, par iorih0304

    My linux distribution is Ubuntu 20.04 server, and ffplay is compiled from ffmpeg v3.4.1 source code.

    


    I use the command

    


    ffplay -f rawvideo -video_size 1920x1080 -i BasketballDrive_1920x1080_50.yuv


    


    or

    


    Display=:0 ffplay -f rawvideo -video_size 1920x1080 -i BasketballDrive_1920x1080_50.yuv


    


    But it displays failed, the message shows :

    


    ffplay version 3.4.1 Copyright (c) 2003-2017 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
  configuration: --enable-shared --enable-nonfree --enable-ffplay
  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
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100

Could not initialize SDL - No available video device
(Did you set the DISPLAY variable?)


    


    Follow some website's suggestions, I try to install apt-get install libx11-dev xorg-dev, compile and install SDL2-2.0.14 from source code and recompile ffmpeg and ffplay.
But the result is the same.

    


    How can I let it display successfully ?

    


    Thanks !

    


  • 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
  • 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 &#39;analyzeduration&#39; and &#39;probesize&#39; options
    Input #0, rtsp, from &#39;rtsp://192.168.1.7/ipcam_h264.sdp&#39;:
    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