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: 14cdb2be

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

Change-Id: Idb0d2bf89ac109b03afa8a7335cc1474897dff0d