No audio with a .mkv Matroska file

[midimidi]

Since GSpot doesn't support Matroska, I'm not even sure what the audio format is.

This particular file plays fine in Media Player Classic, but video only. It comes up with an error when trying to play it in MPC. Any help would be appreciated, as I'm not quite sure what I'm looking for.

Stream 1

Media Type 0:
--------------------------
AM_MEDIA_TYPE:
majortype: MEDIATYPE_Audio {73647561-0000-0010-8000-00AA00389B71}
subtype: Unknown GUID Name {000000FF-0000-0010-8000-00AA00389B71}
formattype: FORMAT_WaveFormatEx {05589F81-C356-11CE-BF01-00AA0055595A}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 23

WAVEFORMATEX:
wFormatTag: 0x00ff
nChannels: 2
nSamplesPerSec: 44100
nAvgBytesPerSec: 0
nBlockAlign: 0
wBitsPerSample: 0
cbSize: 2 (extra bytes)

[gastorgrab]

A few suggestions on that subject are made here;
https://www.videohelp.com/forum/viewtopic.php?t=240184&highlight=

[midimidi]

Thanks - VideoInspector did the trick. Looks like its AAC.

[gastorgrab]

Media Player Classic has a built in AAC decoder, but if the audio stream is HE-AAC it probably won't play.

If you install CoreAAC DirectShow filter, and disable the built in filter inside MPC (View / Options / Filters) the audio should be heard.



CoreAAC seems to decode HE-AAC.
CoreAAC directshow filter v1.0b9

[monzie]

VLC / Videolan is all you need.