Downmixing 5.1 to stereo

jesse

My xbox wont play mp4s with 5.1 so i have to downmix to stereo. Anyone got any thoughts?

I don't really want to do re-encodes. I'd love to just passthrough the video, but i can't find anything that will do it.

FFmpegX aborts (could be me not doing it right) and handbrake wont passthrough the video.

I can do it in quicktime pro but it flattens it in a really weird way, the music is fine but the speech is all in the right channel. This is actually specific to one file I have.

I'd just like a little more control and comfort that i'm not losing anything.

.

GffMaC

A nice app for that is virtualdub windows unforunately tho. Its also good for fixing audio thats out of sync.

blueshead

This is supposed to stream audio and video to an xbox. It downconverts 5.1


Twonky Media Server

Biff

Twonky is PC only.

Meska

You don't use this already?

jesse

i use rivet.

As far as I understand it, it's a limitation of the xBox or mp4 or both.

jesse

virtualdub doesn't open mp4s

blueshead

biff said.. Twonky is PC only.

I beg to differ.

http://www.twonkyvision.com/TM_server_download.html

GffMaC

jesse said...virtualdub doesn't open mp4s

maybe try this plugin never tried it personally

Biff

Whoa! When did twonky go OSX! Cool. Thanks.

jesse- it's a limitation of the xbox 360 h.264 codec.

micky

iVideoConverter will do the trick.

I use the app to downmix my MKVs from DTS 5.1 to AC3 5.1 for my WD TV. You can downmix audio and do video passthru etc.



[hide]iVideo Converter 2.1.7 [Intel & PPC K'd]

Intel
http://www.mediafire.com/?wzmjt5k5kzj
http://rapidshare.com/files/329740507/iVCo217i.dmg


PPC
http://www.mediafire.com/?znzhhczymmz
http://rapidshare.com/files/329740037/iVCo217p.dmg

Password: stw[/hide]

jesse

Thanks chicken, that almost worked.

Apparently though only AC3 audio streams can be resampled, this file would appear to not be that. Listening to it in VLC all the speech does appear to be in the right channel even in 5.1. Weird.

I like Twonky as a server but it doesn't really fix or have anything to do with the problem I asked about initially.

micky

eh? Only AC3 audio streams can be resampled? As I mentioned in my first post, I downmix DTS 5.1 audio to AC3 5.1... even AAC Stereo... quite a lot and never had any problems i.e speech not appearing in the right channel.

Did you choose the proper output audio to stereo?

jesse

I think it was just the particular file. It wouldn't let me convert the audio to stereo. In the end I converted it to a .mkv with AC3 5.1 and then back to an mp4 in stereo.

Anyway, thanks for the help.

GffMaC

Nice app chicken, thx.. got the mcjstw edition

Meska

Lol, thanks for the heads up BoomChickenWaaWaa.

jesse

I should say, it's a great app exactly what i was looking for. Thanks Micky.

Just for the record.