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If you have old computer any codec will make problems for real time encoding (not just for CPU but for disk as well). I suggest to find resolution which is low enough to reduce file size. I you want to have custom resolutions and framerate (mpeg1/mpeg2 can't be used). Resolution and framerate choose wisely.

Here is my suggestions for switches in ffmpeg:

-vcodec libx264 
-r 15
-preset ultrafast
-s 800x600

here I put 800x600 (this is maybe too low) and framerate is 15 fps. For better performance set framerate from 15 to 10 FPS. In my experience x264 is fast codec and allows custom resolutins and framerates.

Here is setup for MPEG2 (which is faster but is limited by resolutions & framerate)

-r 25 
-s 720x480 
-preset ultrafast 
-vcodec mpeg2video

If you have old computer any codec will make problems for real time encoding (not just for CPU but for disk as well). I suggest to find resolution which is low enough to reduce file size. I you want to have custom resolutions and framerate (mpeg1/mpeg2 can't be used). Resolution and framerate choose wisely.

Here is my suggestions for switches in ffmpeg:

-vcodec libx264 
-r 15
-preset ultrafast
-s 800x600

here I put 800x600 (this is maybe too low) and framerate is 15 fps. For better performance set framerate from 15 to 10 FPS. In my experience x264 is fast codec and allows custom resolutins and framerates.

If you have old computer any codec will make problems for real time encoding (not just for CPU but for disk as well). I suggest to find resolution which is low enough to reduce file size. I you want to have custom resolutions and framerate (mpeg1/mpeg2 can't be used). Resolution and framerate choose wisely.

Here is my suggestions for switches in ffmpeg:

-vcodec libx264 
-r 15
-preset ultrafast
-s 800x600

here I put 800x600 (this is maybe too low) and framerate is 15 fps. For better performance set framerate from 15 to 10 FPS. In my experience x264 is fast codec and allows custom resolutins and framerates.

Here is setup for MPEG2 (which is faster but is limited by resolutions & framerate)

-r 25 
-s 720x480 
-preset ultrafast 
-vcodec mpeg2video
1
source | link

If you have old computer any codec will make problems for real time encoding (not just for CPU but for disk as well). I suggest to find resolution which is low enough to reduce file size. I you want to have custom resolutions and framerate (mpeg1/mpeg2 can't be used). Resolution and framerate choose wisely.

Here is my suggestions for switches in ffmpeg:

-vcodec libx264 
-r 15
-preset ultrafast
-s 800x600

here I put 800x600 (this is maybe too low) and framerate is 15 fps. For better performance set framerate from 15 to 10 FPS. In my experience x264 is fast codec and allows custom resolutins and framerates.