Merge "transcoding: change max back-to-back running time to 2min" into sc-dev...

Merge "transcoding: change max back-to-back running time to 2min" into sc-dev am: 4c10fabc am: 763362d3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/14506397

Change-Id: Ib634b65edb98fdfdb39e6e687028e273e9d72ce1