AirPlay 5.1 surround

[Paul Figgiani]

Jeremy,

Try this:

Assuming you have an AirPlay compatible H.264 video file with no audio …

Pull your stems into Compressor using the Add Surround Sound Option. Use the AC3 file preset. Use Coding Mode:

3/2 (L,C,R,LS,RS). Enable LFE.

Now have Compressor build the file.

Next use Quicktime 7 to open the H.264 video and the encoded AC3 audio file. Make sure you queue the movie file and the audio file at the beginning. Select the audio file window – from menu:Edit/Select All/Copy.

Now select the movie window – from menu:Edit/Add to Movie

Now check Show Movie Properties from the QT 7 menu. You should see the AC3 audio track with the proper channel routing. Save it out. That should do it …

-paul.

[Jeremy Garchow]

Thanks, Paul.

I originally tried that, but got lots of crashing.

After your post, it seems to be working a bit better . 😉

Subler works pretty well, actually, and allows me to mux and x264 and ac3 to m4v.

More testing!

Jeremy

[Don Walker]

Would someone explain what stems are? (I know that in the old days working with 7 and Soundtrack Pro, that the result would be STEMS) but I confess I don’t really know what I’m looking at when I see them.
(A google search first page talked a lot about plants, florists and branches)

don walker
texarkana, texas

John 3:16

[Warren Eig]

Stem are the raw surround tracks. There are 6 stems to a 5.1 mix– L, C, R, Lc, Rc, LFE.

Warren Eig
O 310-470-0905

email: warren@babyboompictures.com
website: https://www.babyboompictures.com

REEL: https://www.babyboompictures.com/BabyBoomPictures/Reels.html

[Jeremy Garchow]

A stem is basically an audio channel.

From the audio engineer I get six channels of audio, Left, Right, Center, LFE, Left Surround, and Right Surround. I bring in all 6 tracks and stack them in the order I need.

Those 6 channels then get encoded to 5.1 ac3 (which is just one file with 6 channels).

Another example of stems is when you receive split mixes from an engineer (like Dialogue, Music, Effects) all on separate tracks.

This is opposed to a stereo mix where everything is combined.

When you export a multitrack QT from FCPX using Roles, you are essentially exporting stems. Each Role corresponds to it’s own channel.

Jeremy

[Paul Figgiani]

Jeremy,

Cool. I wasn’t aware of Subler. I’ll check it out …

I didn’t have any problems running this through Compressor/QT 7. I also confirmed playback compatibility on my system.

Thanks.

-paul.

[Jeremy Garchow]

[Paul Figgiani] “I also confirmed playback compatibility on my system. “

Thanks, Paul.

Did you Airplay it?

[Paul Figgiani]

[Jeremy] Thanks, Paul. Did you Airplay it?

Yes. Worked as expected with proper channel routing …

-paul.

[Lance Bachelder]

I’ve done these easily in FCPX – just using a 5.1 project and making certain all my roles and audio properties are correct – i.e Dialog set to Center Channel etc. and used the Apple TV 1080p Share with 5.1 – works perfect via Airplay to Apple TV!

Lance Bachelder
Writer, Editor, Director
Downtown Long Beach, California
https://www.imdb.com/name/nm1680680/?ref_=fn_al_nm_1

[Jeremy Garchow]

[Lance Bachelder] “I’ve done these easily in FCPX – just using a 5.1 project and making certain all my roles and audio properties are correct – i.e Dialog set to Center Channel etc. and used the Apple TV 1080p Share with 5.1 – works perfect via Airplay to Apple TV!”

When I do this, it says that it is going to create a stereo file in the export dialog like this:

In QT7, I get back a stereo report like this:

I can only get Surround if I choose Master file and change the codec from Source to h264.

When I mux an Ac3 and x264 movie in Subler, it looks like this:

Jeremy