10 Replies Latest reply: Feb 16, 2013 8:38 AM by TheOneAndOnly BiGMaC
Voltaic Level 1 Level 1 (0 points)

First let me preface that I am working with two different systems and have recreated the issue on both of them- 2009 13" MBP and a 2011 Mac Mini Server.  The issue is caused by Mountain Lion (I know, shouldn't update production systems and all but it happened so I thought I'd give folks a heads up).


In Lion, if I used any of the Apple TV presets in Compressor and ticked the "Include 5.1 Dolby" check box, viola I had my 5.1 surround.  However, when I attempt this in Mountain Lion, the 5.1 audio is created but never muxed into the final m4v that is created.  I have even gone back to old projects that worked fine with this preset and still cannot create a m4v with 5.1 audio. To test this, my wife's MBP was still on Lion as of yesterday so I grabbed a test file and exported to Apple TV 3rd gen with 5.1 and it worked.  I upgraded the system to ML and used the exact same file and this time it only created an m4v with stereo AAC and no secondary track.


Also, exporting directly from FCPX does not work either.


As a workaround, creating a standalone 5.1 mix is possible (as I learned when I needed to create a DVD as well for this project) but then I would have to use another program to mux that together with the m4v, which is not as convenient as just using the preset.


I have submitted this as a bug to Apple but I encourage anyone experiencing this issue to do the same.

Mac mini, OS X Mountain Lion (10.8.1), RAID 0 2 x 240GB SSD 16GB Mem
  • TheOneAndOnly BiGMaC Level 1 Level 1 (95 points)

    Here's what I did to fix it permanently.... First, this only happens with iTunes movies that have an AC3 soundtrack.  Downloaded iTunes Store content works fine.  For all the ripped movies in my iTunes Library( I use ripit, MakeMKV, occasionally AUNSoft MKV converter, and always finish in Handbrake.  Metadata is added via Subler)... about 4 TB  of movies..... Icopied them by drag and drop into a folder on my desktope, then opened in Subler and UNCHECKED the AC3 designation in the audio field.  Next save and after deleting the movie from iTunes I copy the corrected file back into my iTunes library.   This has not failed once nor required ay extra manipulation to play DD 5.1 sound.  Pain... but works!

  • Voltaic Level 1 Level 1 (0 points)

    So while I appreciate the suggestion, I would consider that a workaround at best.  This issue is still present with today's updates.  Please, if you experience this issue, submit a bug report to Apple using this link.

  • Voltaic Level 1 Level 1 (0 points)

    Hey guys, I've been posting about this in other threads but wanted to provide an update.  I emailed Apple's exec team and received two phone calls today, both stating they have received the bug reports and are reviewing the issue.  No ETA but at least they are aware of it.  I hit the panic button when 10.0.6 rolled out with the same issue.

  • TheOneAndOnly BiGMaC Level 1 Level 1 (95 points)

    Honestly... For ATV2 The preset for Handbrake does not check the "surround" box even though it encodes AC3 as a passthrought.  So I think it was actually my fault and the fact that it worked before was a boulean flag error in the APIs of ATV2 software which did not enforce the Apple standard for maudio which is AAC stereo....  I have noticed that there was some problem with audio after each of the last 3 ATV2 software updates.  The Work around I used before was to sart checking the "surround" box.... a standard would be nice.  I just finished redoing this part of the metadata on over 2200 hours of HD videos... whew!

  • Overrider Level 1 Level 1 (0 points)

    Ok I have postet that to FCPX Bug Feedback:


    I think the bug is in Mountain Lion and not in FCPX or Compressor 4.


    Since this Update from Lion to Mountain Lion  the exportetd Files  of my FCPX surround projects do not include the AC3 Track. In Finder Imca see, that an AC3 apears for a second but the combining imto the final VideoClip does not work correctly.


    Sincerely Yours


    Karl Oberreiter

  • Overrider Level 1 Level 1 (0 points)

    I posted it as well on the OSX Feedback Site

  • Lance Mcvickar Level 1 Level 1 (100 points)

    I have yet to get it working with compressor as well so I export movies as master movie files from FCPX 10.0.7 which keeps the 5.1 in the file and 422 codec, then compress it with HandBreak via Apple TV 3 preset and you will get a aac stereo and an ac3 pass through 5.1 track in the compressed video.  iTunes won't play it in 5.1 via the Mac but it will with an Apple TV via home sharing. You can output the 5.1 via the Mac and hdmi to your surround amp using VLC with the proper settings in the audio options in VLC. It be nice if FCPX could do this via a Apple TV export preset as well as compressor. HandBreak does a great job with all 8 cores at full steam when compressing.

  • Overrider Level 1 Level 1 (0 points)

    I use the same Procedere with handbrake and it Works well.


    Dies anybody know a Methode to store the final Clip into a  special Folder where ist will be imported into itunes automatically?

  • TheOneAndOnly BiGMaC Level 1 Level 1 (95 points)

    Overrider......Just drag and drop your movies on iTunes from the folder you designate as the output for handbrake. iTunes does a little processing of the movie during the copying (check the size using
    Get Ifo" on the files to see the decreased file size in iTunes.


    If you don't want to buy FCP or FCPX try just ripping with MakeMKV (free) I use it for DVD and Blu-Ray... very intuitive, very powerful.  If the movie has a DTS soundtrack, for $10.00 AUNSoft's MKV Convertor does a stellar job.  final processing either way is free with Handbrake,, using the applicable preset as you all note.  The only trick is Do Not designate the AC3 track with a checkmark in Subler, Meta-x or whatever you use.  It will be a passthrough that you will see.


    No complicated software needed.. very simple.  I have over 4TB of HD movies with 5.1 sound streaming to my ATV done this way.  Don't overthink it... see my earlier post for movies already done... Subler can open and let you fix these also if you need to.

  • TheOneAndOnly BiGMaC Level 1 Level 1 (95 points)

    One other thing.... I have not upgraded from iTunes 10.x to 11.x because I love coverflow!