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• Drawtext, drawbox or overlay on only a single frame using FFmpeg

  10 juillet 2013, par waxical

  I'm using the drawtext and drawbox avfilters on FFmpeg, two of the most poorly documented functions known to man.

  I'm struggling to work out if and how I can use them on only a single frame, i.e., drawtext on frame 22.

  Current command :

  ffmpeg -i test.wmv -y -b 800k -f flv -vcodec libx264 -vpre default -s 768x432 \
  
    -g 250 -vf drawtext="fontfile=/home/Cyberbit.ttf:fontsize=24:text=testical:\
  
    fontcolor=green:x=100:y=200" -qscale 8 -acodec libfaac -sn -vstats out.flv

  Two elements mentioned in the documentation are n and t. However, I only seem to be able to use them in x and y. Not in text or even as other parameters.

  Any help or FFmpeg guidance would be gratefully received.

• Converting Multiple Videos from S3 into GIFs with Random Frames using Python and Lambda

  21 novembre 2024, par rahulfaujdar

  I have a collection of videos stored in an S3 bucket, and I'm looking to automate the process of converting these videos into GIFs using Python and Lambda. Each resulting GIF should be precisely 10 seconds long and should contain random frames sampled from different parts of the corresponding video. By random frames, I mean frames from the beginning, middle, and end of each video, creating a dynamic GIF experience.

  


  I've started implementing this functionality using ffmpeg within a Python Lambda function, but I'm encountering difficulties in achieving the desired outcome.

  


  Could someone provide guidance on how to efficiently accomplish this task ? Any insights into Python code for Lambda functions and ffmpeg commands would be greatly appreciated.

  


• Visual Studio can't detect FFmpeg

  19 avril 2023, par Jonathan

  I'm using Visual Studio Community 2022 for a Python 3 project that involves using FFmpeg. However, when I try to run my code, I get the following error message :

  


  RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work


  


  I have FFmpeg installed and added to my PATH, but it still doesn't seem to be working. Here are the steps I've taken so far to try to fix this :

  


  


  1. I tried installing the FFmpeg pip package, but it didn't change anything.

     


  


  2. I searched for solutions on sites like learn.microsoft.com and
stackoverflow.com, but I haven't been able to find anything that works for me. This question also didn't answer my question

     


  


  3. I also asked for help in Visual Studio Code, but I wasn't able to find a solution there either.

     


  


  


  I would appreciate any guidance on how to fix this issue. Thank you !