# 2.8 & 2.81 - WebM / VP9 Encoding error: Additional information: g_timebase.den out of range

Using either Blender 2.8 or 2.81 when trying to encode a video using WebM/VP9 I get the following error:

Additional information: g_timebase.den out of range [1..1000000000]


I've tried a variety of containers in 2.8 including the previous workaround using "Matroska". And I've also tried just WebM encoding preset. Every attempt results in the same error mentioned.

Is there somethign else that I'm missing?

• That is weird. Can you add the complete output / video encoding settings that you've used? I have tested the container and codecs in the past and they worked fine. It's possible that this is a bug in Blender that's caused by the way it calls ffmpeg. – Robert Gützkow Sep 24 '19 at 19:14

CQ level 0 must be between minimum and maximum quantizer value (2-31)