am 4c85e16c: am d2dc1ea3: am 88574352: am 7725022e: Merge "SoftMPEG2: start output at first I-frame"

* commit '4c85e16c9f7cbd9e9fa4713d62ed2c7f4da2f7d3':
  SoftMPEG2: start output at first I-frame