Unsupported codec (id=86021) for input stream #0.1

[noctrine]

Hi folks,

I'm trying to resize an MKV and I can't seem to get it to open in ffmpegX. When I click "encode" I get the following error: http://pastebin.com/hwEXExny

Here are the details of the file I'm trying to encode:
http://pastebin.com/S9xTpeYJ

I'm able to open the file in MPEG Streamclip, watch it in VLC, etc.

Thanks!

[Case]

Audio Codecs Used: DTS

Stream #0.1: Audio: 0x0000, 48000 Hz, 5:1
Unsupported codec (id=86021) for input stream #0.1

ffmpegX is currently unable to process DTS audio.

You could try setting Audio to Passthrough, but I'm not confident that would work.

[noctrine]

Alright, well there you have it! Thanks.

Ultimately, I'm going to "downgrade" the audio to stereo. Any suggestions for:

1) what audio codec I should use that is ffmpegX friendly
2) what application I should use to convert from DTS to that ffmpegX-friendly codec
and
3) are there any tricks/problems converting to stereo?

I'm using a Mac but can use Win.

Thanks again

[noctrine]

I ended up using MPEG Streamclip; it defaults to a stereo output...Thanks again!