tree 58ba2b579b541eaa7b508b552c30ea83ad153c84
parent 60d5ce3e76575848b7640f0e8f0b18923569a8d8
author Wan-Teh Chang <wtc@google.com> 1618333940 -0700
committer Wan-Teh Chang <wtc@google.com> 1618360189 +0000

Convert input frames to monochrome before encoding

When encoding a color input to a monochrome output, convert input frames
to monochrome frames in the AOM_IMG_FMT_I420 format before passing them
to aom_codec_encode(). The libaom encoder apparently has some problems
with encoding input frames in the AOM_IMG_FMT_I422 format to a
monochrome output. Although I could not get to the bottom of those
problems, this change allows us to bypass those problems.

Do not upgrade profile 0 to profile 2 when encoding to a monochrome
output, even if the input is YUV 4:2:2.

BUG=aomedia:2913

Change-Id: I86cc6a5a533092e241ba26b95d65a9cbe5fdd67f