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• Libav/FFmpeg and Google Summer of Code 2012

  26 avril 2012, par Multimedia Mike — General, ffmpeg, gsoc, gsoc2012, hevc, libav, opus, rtmp, ut video

  So, the projects are participating in the Google Summer of Code for the 2012 season. (While Libav is the project officially accepted to particular, I still refer to the projects because FFmpeg will also benefit).

  Here are the students, projects, and mentors for this summer :

  1. Andrew D’Addesio is working on an Opus Decoder, mentored by Justin Ruggles
  2. Guillaume Martres is working on an HEVC video decoder, mentored by Mashiat Sarker Shakkhar
  3. Jan Ekström is working on an LGPL Ut Video encoder, mentored by Kostya Shishkov
  4. Jordi Ortiz is working to rewrite avserver, mentored by Luca Barbato
  5. Samuel Pitoiset is working on an RTMP[E|S|T|TE] protocol implementation, mentored by Martin Storsjö

  Wish them luck– these are some ambitious projects.

• Can't upload .mkv video file to camtasia 2018

  11 juin 2019, par FunTech StudentsVideos

  Can’t Import .mkv video file to camtasia 2018 :

  I have made an intro for my Youtube Channel on Penzoid and then uploaded it to my laptop in .mkv file format, now it can’t be import to camtasia 2018 for rendering with the recorded video in camtasia...

  I used cloudconvert to convert my intro to .mp4 format but it give me the following error :

  ERROR Could not find tag for codec vp8 in stream #0, codec not currently supported in container
  . Last message repeated 1 times
  Last message repeated 1 times

  I also used .bat file with the following code but it didn’t help me :

  @echo off
  
  if not exist "fixed" mkdir fixed
  
  for %%f in ("*.mp4") do "C:\Users\Nadeem Ullah\Downloads\Compressed\ffmpeg-win64-static\bin\ffmpeg.exe" -i "%%f" -c:a copy -c:v copy "fixed\%%~nf.mp4"

• How to run a ffmpeg command in python with file paths containing spaces ?

  21 juillet 2023, par tomatochan

  I'm developing a program in Python that requires the use of FFMPEG. In one step, I need to create a video from a text file containing the list of images (path and duration) that need to be assembled to make a video. To do this, I use the following code :

  


  cmd = [ffmpeg, "-y", "-f", "concat", "-safe", "0", "-i", tmp, "-c:v", "libx264", "-r", "25", "-pix_fmt", "yuv420p", out]
subprocess.run(cmd)
# os.system(" ".join(cmd)) # returns same error


  


  What returns the error : The syntax of the file, directory or volume name is incorrect.

  


  I know that paths can be problematic when they contain spaces, and as my username has one, I've taken care to quote the paths in such a way that :

  


  ffmpeg = "C:\Users\John Doe\Documents\ffmpeg\bin\ffmpeg.exe"
tmp = "C:\Users\John Doe\Desktop\path\to\file.txt"
out = "C:\Users\John Doe\Desktop\path\to\video.mp4"


  


  When I print(" ".join(cmd)), this is what I get in my terminal :

  


  "C:\Users\John Doe\Documentsffmpeg\binffmpeg.exe" -y -f concat -safe 0 -i "C:\Users\John Doe\Desktop\path\to\file.txt" -c:v libx264 -r 25 -pix_fmt yuv420p "C:\Users\John Doe\Desktop\path\to\video.mp4"


  


  However, the problem persists.
Has anyone ever had this problem and managed to solve it ?

  


  I've also tried the method where you have to escape the spaces (taking care to replace the \ with / and then the with \ ) but nothing works... The error persists.

  


  For your information, here are the contents of one of my .txt files

  


  file C:\Users\John Doe\Desktop\path\to\image_1.png
duration 0.04
file C:\Users\John Doe\Desktop\path\to\image_2.png
duration 0.04
file C:\Users\John Doe\Desktop\path\toimage_3.png
duration 0.04


  


  When I quote the paths in the .txt files

  


  

  • subprocess gives me the error :
PermissionError: [WinError 5] Access denied

  


  • os.system gives me the error :

  


  


  C:\Users\John' is not recognized as an internal or external command, an executable program or a command file.
The syntax of the file, directory or volume name is incorrect.