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• Configure script for ffmpeg does not find sdl2

  3 avril 2018, par Peter

  Environment :

   Ubuntu 16.04
  
   ffmpeg source code version 3.4.2

  SDL2 installed

  $ pkg-config --exists --print-errors sdl2
  
  $ sdl2-config --cflags
  
  -I/usr/include/SDL2 -D_REENTRANT
  
  $ sdl2-config --libs
  
  -L/usr/lib/x86_64-linux-gnu -lSDL2
  
  $ sdl2-config --version
  
  2.0.4

  Here is part of my configuration shell script :

  PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$TARGET_DIR/lib/pkgconfig" ./configure \
  
  --prefix="$TARGET_DIR" \
  
  --pkg-config-flags="--static" \
  
  --enable-sdl2 \

  When I run the script, the error I get is "sdl2 requested but not found."

  What is it that I am missing ? Regards.

• Watermarking script from the given image

  26 mars 2018, par Marasmius

  Good day, I recently found a script for drawing a watermark on the video (link to the script - https://github.com/ham-grey/QRWatermark ), the script generates a watermark for the given text, but I would like the watermark to be taken from beforehand the generated picture, is it possible ?
  Alas, I am far from programming, but I must begin to understand, at least, the basics.

• How to extract single image (with different name each time) from multiple videos in the one folder using ffmpeg bash script

  15 juillet 2014, par morriscotty_sd

  Let’s start with this... I’m fairly new to Linux.

  I have been looking into ffmpeg to extract an image from a video using the terminal. I’ve accomplished this using this piece of code :

     ffmpeg  -itsoffset -4  -i oggvideo.ogg -vcodec mjpeg -vframes 1 -an -f rawvideo -s 320x240 oggThumb.jpg

  I run this when I’m in the directory which holds the videos in my project. But what I want is to extract an image from all videos in that folder at the same time, naming the image corresponding with the video name it’s extracted from. My end goal is to have a folder which will hold videos that a user uploads, and at a certain time the script will run and extract images from the uploaded videos, saving the image path to a database.

  I found this line of code :

  for %%i in (*.mp4) do ffmpeg -ss 20 -i %%i -t 1 -s 590x340 -f image2 %%i.jpg

  from this site : Trying-to-extract-1-image-from-multiple-videos-with-FFMPEG

  I run that in the terminal and it gives me the error : ’bash : syntax error near unexpected token `(’’
  I tried removing the ’( )’ but then it just takes me onto a new line. This is where I’m having the most problems due to being relatively new to linux commands.

  Any suggestions or advice would be very helpful.