Set default value for getting width, height and
framerate video parameters in transcoding
VideoFormatResolver.
Bug: 198164635
Test: cts-tradefed run singleCommand cts
-m CtsMediaTranscodingTestCases
-t android.media.mediatranscoding.cts.
MediaTranscodingManagerTest#testVideoFormatResolver
Change-Id: I00258bc158b932a831df644e641ff226af1d02c7