2

https://ffmpeg.org/ffmpeg-all.html#ssim

I ran a command like this:

.\..\ffmpeg -i [Input] -i [Output] -lavfi  ssim="stats_file=ssim.log" -f null -

and saw this in the ssim log outputs:

n:70 Y:0.947271 U:0.985112 V:0.985611 All:0.959968 (13.975937)

I understand the values for everything except for the value in the parentheses, after All (13.975937). Is this the db representation of the YUV,All values, or is it something different? How is it calculated? Thank you.

1 Answer 1

2

It is dB representation of All value, calculated with following formula:

10 * log10(1 / (1 - ssim))

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.