I have made some tests to see how well encoders work on a specified bitrate.
OS: L4T 32.3.1
Here’s the result.
As you can see, it works as expected until each encoder reaches to its limitation.
Now, here’s another test with
vbv-size=1 on the same test matrix.
As seen, each limitation is the biggest factor. Not much effect can be seen here.
But please take a look at those results of VP8, which look very difference from the previous ones. It looks like using
vbv-size makes an vp8 encoder ignore the bitrate.
Is this a bug or an expected behavior?