Chrome Version: 65.0.3325.181
OS: Linux

What steps will reproduce the problem?
(1) https://shaka-player-demo.appspot.com/demo/#asset=https://storage.googleapis.com/wvtemp/kqyang/aac/out.mpd

What is the expected result?

Content plays successfully.

What happens instead?

Shaka Error MEDIA.VIDEO_ERROR (4,,CHUNK_DEMUXER_ERROR_APPEND_FAILED: Append: stream parsing failed. Data size=775 append_window_start=0 append_window_end=54.12)

The content works with SRC. It works on Firefox as well.

It is not working in MSE because right now Chrome does not parse program_config_element():

Here is Chromium's current code:

https://cs.chromium.org/chromium/src/media/formats/mp4/aac.cc?rcl=697a2e68c91d94318128f5409d78209bd883f215&l=240
bool AAC::SkipGASpecificConfig(BitReader* bit_reader) const {
  uint8_t extension_flag = 0;
  uint8_t depends_on_core_coder;
  uint16_t dummy;

  RCHECK(bit_reader->ReadBits(1, &dummy));  // frameLengthFlag
  RCHECK(bit_reader->ReadBits(1, &depends_on_core_coder));
  if (depends_on_core_coder == 1)
    RCHECK(bit_reader->ReadBits(14, &dummy));  // coreCoderDelay

  RCHECK(bit_reader->ReadBits(1, &extension_flag));
  RCHECK(channel_config_ != 0);


Here is the spec definition:

GASpecificConfig (samplingFrequencyIndex,
 channelConfiguration,
 audioObjectType)
{
 frameLengthFlag; 1 bslbf
 dependsOnCoreCoder; 1 bslbf
 if (dependsOnCoreCoder) {
   coreCoderDelay; 14 uimsbf
 }
 extensionFlag; 1 bslbf
 if (! channelConfiguration) {
   program_config_element ();
 }