tree 948d3a24e3592d23451daea1a5031c2ef76701eb
parent 9c3bc3fa1673cd630211c6fdc451374d7c4bf98d
author Jingning Han <jingning@google.com> 1642110543 -0800
committer Ryan Lei <ryanlei@fb.com> 1642616794 -0800

Use dummy first-pass frame in CTC

Use a dummy first-pass frame in CTC settings. Avoid exercising
first-pass stats in the encoding process therein.

Change-Id: Ibc8498e826672444299a7b75d5e2f5d134c9af78
(cherry picked from commit cab784db520b8b6c5ab98cf066f9a772030f9dd0)