am e86a37c6: am 8eac1637: Merge change I85adf5e5 into eclair-mr2

Merge commit 'e86a37c6bfb0a0aa9ce871fdfc9e884ab3ddd1d8'

* commit 'e86a37c6bfb0a0aa9ce871fdfc9e884ab3ddd1d8':
  Propagate duration from input to output only if available, support multiple full frames of audio per input buffer in AMR/AAC decoders.