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• linking against SDL library on ubuntu

  18 novembre 2013, par ali129

  this is my first post
  I have this problem with SDL library and "ffmpeg's ffplay" and "dosbox" on ubuntu. Here is what happenning :
  I have installed SDL and code::blocks.
  I also wrote a simple sdl program that shows a picture and tried to compile it tree ways :

  1- On command prompt which compiled and works perfectly. ( i mean : gcc -o hellosdl hellosd.c -lsdlmain -lsdl)

  2- On code::blocks by choosing file->new->project->SDL project
  which compiled but gives an error regarding i can't initialize graphic

  and finally
  3- On code::blocks but this time i manually configured sdl. i mean i simply choosed a blanked c file.then added sdl linker options "-lsdlmain and -lsdl" in code::blocks linker settings. and this time the program workes perfectly.

  Now the problem i have with dosbox and ffmpeg. I tried to compile these programs by running ./configure and make and they compiled without any error. but when i try to run dosbox or ffplay they give me these errors :

  ffplay error :
  ffplay version 0.11.1.git Copyright (c) 2003-2012 the FFmpeg developers
  built on Oct 15 2013 04:34:36 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration :
  libavutil 51. 73.101 / 51. 73.101
  libavcodec 54. 56.100 / 54. 56.100
  libavformat 54. 27.101 / 54. 27.101
  libavdevice 54. 2.100 / 54. 2.100
  libavfilter 3. 16.104 / 3. 16.104
  libswscale 2. 1.101 / 2. 1.101
  libswresample 0. 15.100 / 0. 15.100
  Could not initialize SDL - No available video device
  (Did you set the DISPLAY variable ?)

  and yes my DISPLAY variable is set correctly

  echo $DISPLAY
  :0.0

  and

  dosbox error :

  ---

  Exit to error : Can't init SDL No available video device

  i also tried installing dosbox using sudo apt-get install dosbox and it works perfectly.

  i don't know why for some occasion my sdl library works and for some doesn't .
  it would be great if you could help me.

• Play stream via FFplay (FFmpeg) in Docker

  18 mars 2020, par Matan Marciano

  It is possible to play a video file via ffplay in Docker ?
  I have tried to build this docker :

  Dockerfile :

  FROM ubuntu:18.04
  
  RUN apt-get update && apt-get install -y ffmpeg

  After run this docker with a command :

  docker run -v /demo:/demo ffmpeg-test bash -c "ffplay -i /demo/test.mp4"

  I got ffplay logs without any player window.
  What am I missing ?

  FFplay logs :

  ffplay version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2003-2019 the FFmpeg developers
  
    built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  
    configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --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

• FFMPEG - Invalid data found when processing input

  14 janvier 2016, par Siva Prasanna

  I want to play an RTSP live stream that I get internally. I’m using ffplay to play this. And this is the command that I use :
  ffplay -i "rtsp://test.vibrtech.com/mov/video.sav?MAC=00C2100F124&channel=2&GUID=betauser", but when I execute, I get Invalid data found when processing input error. The complete error output is given below :

  D:\..>ffplay -i "rtsp://test.vibrtech.com/mov/video.sav?MAC=00C2100F124&channel=2&GUID=betauser"
  
  ffplay version N-77816-g9ca64c3 Copyright (c) 2003-2016 the FFmpeg developers
  
  built with gcc 5.2.0 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads 
  
  --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls 
  
  --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca 
  
  --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm
  
  --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp 
  
  --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
  
  --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
  
   --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
  
   --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
  
  --enable-lzma --enable-decklink --enable-zlib
  
  libavutil      55. 13.100 / 55. 13.100
  
  libavcodec     57. 22.100 / 57. 22.100
  
  libavformat    57. 21.101 / 57. 21.101
  
  libavdevice    57.  0.100 / 57.  0.100
  
  libavfilter     6. 23.100 /  6. 23.100
  
  libswscale      4.  0.100 /  4.  0.100
  
  libswresample   2.  0.101 /  2.  0.101
  
  libpostproc    54.  0.100 / 54.  0.100
  
  rtsp://test.vibrtech.com/mov/video.sav?MAC=00C2100F124&channel=2&GUID=betauser: Invalid data found when processing input