[Invalid] Very Fast encode size doesn't add up

[SlyNine]

Using Windows 7 64bit with build 0.9.9.5530 64bit. Normal profile and High profile presets the Very Fast not only out performs the slower x264 presets in speed (as expected) but it also produces a smaller file (unexpected).

[s55]

This is not abnormal. the slower settings enable additional features and change settings that can increase filesize but also has an affect on quality.

Not as bug.

[mod16]

Using Windows 7 64bit with build 0.9.9.5530 64bit. Normal profile and High profile presets the Very Fast not only out performs the slower x264 presets in speed (as expected) but it also produces a smaller file (unexpected).

But also at the expense of quality.

You can - basically - think of it as some kind of a triangle:
(the "x" could be the point where the "very fast" setting is located)

Code: Select all

      Quality
        /\
       /  \
      /    \
     /___x__\
Encoding   Small
Speed      Filesize

[SlyNine]

Thx for the replies

This was at a constant quality. The very fast should be producing a bigger file size right? Compared to medium. But it's significantly lower in size and faster on multiple video sources. In both the nightly and stable builds.

[Deleted User 11865]

No, veryfast lacks some psychovisual optimizations that increase the file size but also the quality. Unfortunately, the constant quality scale varies depending on the encoding settings.