• Compression Techniques

  Transcoding 3840×2160 60fps MP4 to WEBM, best settings?

  Posted by Thomas Brigantino on March 18, 2016 at 6:56 pm

  Hi,

  I am using Open Broadcast Software to screen capture 3840×2160 60fps in H.264 in a MP4 container.

  I included a LOG file showing my current settings.

  The issue rests in the transcoding the encoding from OSB MP4 to WEBM.

  I am arriving at 5 minutes of recorded video from OBS takes 1:30 minutes to convert to WEBM.

  I have 2 i7-3960 3.3, 49gb RAM, Windows 7 64-bit and working off a 2tb SSD.

  I am using FFMPEG with the myFFMPEG interface as it is easier to process for me. I have Max. batch threads set to 8 and CPU Cores set to 12 which they are all engaged.

  I have to record 30 minutes worth of screen capture and I am thinking of how to minimize the amount of time it takes for that to be processed.

  Is the 5 minute transcode of 1:30 minutes a good indicator if I was to transcode 6x that amount of time it would be 6x lengthier to transcode?

  Any suggestions on what FFMPEG settings I can use to reduce the transcode time and the application I use, myFFMPEG, can accept arguments.

  Thank you kindly for through and looking forward to your response!

  Thomas

  Lou Logan replied 10 years, 1 month ago 2 Members · 1 Reply
• 1 Reply

• 

  Lou Logan

  March 24, 2016 at 5:36 pm

  Why do you want WebM? Also, WebM is just a container format, so I must ask if you are outputting VP8 or VP9 video.

  You should show your ffmpeg command and the complete console output/log.

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