MP4 - anamorph flag and multiple audio tracks

So far Quicktime simply ignores the anamorph flag in mp4 video files, making it impossible to backup dvds and converting them for appletv without a very significant loss in resolution and quality. Will there be an update for this issue soon or is it simply not wanted to allow best possible backups? I know the workarround with the quicktime reference movie, but why not implement the mp4 specs correctly and make it all easier for us?
What about MP4 videos with multiple audio tracks. I'd like to keep english and german audio tracks of my DVDs when converting to appletv. As far as i know appletv doesn't allow a selection of the audio track. Workarround with Quicktime Reference Movie works here es well, saving two Reference Movies with only one audio track enabled, but why not make it easy for us consumers and allow audio track selection on appletv. Will there be an Update?
Hope to get some answers.

modelone,
Thanks for your post. I have been experiencing the same problem of not being able to pass-through export an MP4 file that was encoded with CE-Quicktime profile.
Your post helped me to discover a workaround that will allow you to set the proper width of an MP4 file that is encoded with CE-Quicktime profile. This method does not require Quicktime Pro, and the corrected file plays properly in Quicktime and Apple TV.
First, encode the MP4 file using CE-Quicktime profile. Then, open Dumpster and drag the MP4 file into it. Navigate to 'moov', then 'trak', then 'tkhd', then select 'Matrix [a b u]'. There are 3 hexadecimal values for this key. The first number is the transformation matrix that Quicktime and Apple TV uses to determine the correct display aspect. This is the value that is multiplied to the encoded horizontal resolution to derive the horizontal display resolution. For e.g. if the encoded resolution is 720 x 576 and you want it to play back in 1024 x 576, the matrix value is 1024/720 = 1.4222. Change that first number to this correct hexadecimal fractional value and click 'Apply'.
The patched MP4 file will now play back in correct aspect ratio in Quicktime and Apple TV.
Hope this helps!

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bogiesan

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How do I import multiple audio tracks?

Hi there...
I have a number of video files that have multiple audio tracks in them. The problem is I can not work out how to get prem to see multiple audio tracks. The files import fine and I have also tried various other formates with multi-track audio.. but only audio "stream 1" is visible in prem.
What I was hoping is that the video would come in with a 2 audio tracks instead of 1 each in its own "lane".. so I can then use the mixer and the audio files are linked to the video file and in perfect sync.. (just like when you import with 1 track)
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--Me

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Hi there,
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So, essentially, you're trying to take a recording of say, a singer and a guitar player, and end up with the singer in one file and the guitar in the other. Got it.
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/Merge.html]
That sample will merge multiple input files into a single file. Because you want to play the files together rather than save them, just take the sample and strip out all of the DataSink stuff, and add the following line right after the Processor "outputProcessor" is realized...
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Can AppleTV play multiple audio tracks in a movie?

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this same question was asked in the last 2 days (and may even be still listed on page 1).
http://discussions.apple.com/thread.jspa?threadID=1541440&tstart=15
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Premiere pro: multiple audio tracks in a single take. (Workflow for audio mixing outside premiere)

Hi I am an editor from Finland.
I need to sync multiple audio tracks (like 2 stereo and 4 mono) to different takes before i start to edit. You see, after the editing I will create an OMF file for the sound editor who needs all the audio tracks to work with. I have noticed however by just nesting (puttin video and audio clips in a single sequence) the resulting sequence placed on in the main sequence is flattened into stereo (not multichannel). You see my problem here? I am surprised, because i have always taught that this is a very normal workflow and so far i haven't found a single tutorial or a guide for this problem.
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Oh yeah, Premiere Pro CS5

Hi!
This is the case when i get a master clip with all the audio tracks in it. I however got separate files, a bunch of different video files (with stereo track), for every take a boom mic audio track, and a few tracks for all the microphones on the actors. Now after i import these into premiere, how will i proceed so that after i have synced all the audioclips to all the video clips (by nesting?) I will still have all the audio clips intact in the OMF file I will create.
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Working with multiple audio tracks

Hello,
I'm working with video clips that have a stereo audio track (guide audio fed into the camera) synch'ed to 4 mono tracks (recorded from a variety of boom mics and lavaliers).
Although I've linked all the audio clips to the video, it still gets a bit cumbersome when performing T or L cuts. When I hold down the Option key, I still have to adjust each of the audio track separately.
Is there a more efficient way to deal with multiple audio tracks? Maybe some way to treat these audio tracks as one unit?
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Thanks,
Thien

One way:
Lock the video track.
Use the Edit Selection Tool to Select the audio transition points
This will automatically open the Trim window, where you can move the cut point - in this case I am moving the audio cut(s) 30 frames later than the video cut:
which gives me the displacement of all the tracks that I wanted:
You can use this quite quickly once you get used to it.
MtD

Question about multiple audio tracks

Hello,
I see that imovie has only 2 audio tracks available when creating a movie. I need more than two since I will be working with a voiceover track, a soundtrack and at least one background/environment track all at one time. I won't be able to use the sound recorded with the video so that "track" is not an option.
My question is; Am I out of luck here and need to spend the 1K for studio pro to add more multiple audio tracks?
Also, I tried working with garageband but since all of my audio tracks import in at a minimum of 40 beats per minute, the voiceovers are all sped up and sound chipmunky.
Thanks for any help!

Well I didn't mean to irritate you...LOL And yes, I realize that this is the iM 6 forum but the gist of my question was related to multiple audio tracks in iM and thought I would ask about it in the forum pertaining to the latest release.
I had already posted a question in the GB forum regarding the bpm problem and found no answers so I was pretty much about to shelve that idea and forgo the whole garageband thing; this without knowing about the new "swap" features. I just updated to iM 6 yesterday.
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ah, thanks for that
what irritates me, Prince wrote:
The audio tracks were voiceovers that came from my
dv8tape, imported into imovie4.
... ehm, but this is the iM 6(six) section, as said,
iM 6 allows now "swapping" files with GB3... (I'm way
back in the 90ies.... see my specs... )
so, video is in some iM, and he wants to use the
actual "on-tape" raw audios...
I thnik we need a little more detail...

Export to Quicktime with multiple Audio Tracks?

Hi all --
I am on a tight deadline (48 hrs!) to deliver a Quicktime Prores file with 6 audio tracks: ch 1+2 dialog, ch 2+3 music&effects, ch 4+5 stereo mix. I'm working with FCP 6.
Now, I have figured out how to export the FCP 6 project to a Quicktime file with multiple audio tracks (in the Project settings, I specify 3 stereo channels, then I assign each audio track to one of the channels and export everything to a Quicktime file).
However, how can I send a stereo mix to channels 4+5?? FCP only allows me to assign each audio track one but not multiple output channels, and I didn't see a way where I could create a bus.
Can anyone help?
Thanks!

Something is being miscounted here. You say you have dialog on 1+2 and then say you have M&E on 2+3? I think you meant to say 3+4 and the stereo mix will be on 5+6. The easiest way to do this is to copy tracks 1-4 to tracks 5-8 by shift-option-dragging them there. Holding option will copy the tracks instead of moving them and holding shift will insure that the tracks will not move earlier or later. Then send 5+6 (dialog) to the 5+6 output (using the info in the above referenced discussion) and send 7+8 (music&effects) also to the 5+6 output. Done.

Adding Multiple audio tracks

Hi people.
How can I add multiple Audio tracks on a video which then can be switched on a DVD remote control?
Please help.
thanks in advance.
J.

jagthandi,
I agree with you on the separate purchase of Encore. It's a great authoring program. Until CS3, it was sold as a stand-alone, though was also included in the CS2 Production Studio, which is how I came by it. Adobe began integrating it more and more closely to Premiere Pro, so that became more of a "module," than a stand-alone. As of CS3 it only came bundled with P-Pro. Good on one hand, but not so good, on the other. Having used it for many years now, I would be loathe to use any other authoring application.
It seems that Sony has done similar with their DVD Architect Pro, only bundling it with Vegas Pro.
What this means is that there are now few full-featured authoring applications in an affordable price range. DVD Studio Pro being one of the few, and its interface is not as clean as Encore's. It offers potentially more power, but you have to do some basic programming to use that power. At the top of the list is Sonic Scenarist, but at around US$50K, complete, it's not really an option. Also, its interface takes years to learn.
So very glad that I have Encore2. I will likely never part with that program, as it does 99% of what I would ever want from an authoring application. That last 1% can usually be done with some creative workarounds.
Hunt

Any way to export QuickTime w/ multiple audio tracks?

I remember seeing QuickTime movies where on playback you can select which audio tracks to listen to. Kind of like director's commentary or different language versions for the same video stream...
Is there a how-to guide for making a movie like this in FCP? We have one video file and multiple audio files that we've placed in different tracks in the timeline but when we export to a QuickTime movie they get all merged together. We tried setting it up with multiple audio channels and then control-clicking to get that menu with each audio track and putting them into the different channels, but there must be something we're missing...
Is this something only FCP 6 can do? I think we have version 5.
thanks!

I'm a little rusty on this - and without access to FCP 5 at the immediate moment - but I think the key is to set your sequence to have multiple (as in more than 2) audio outputs, then select Channel-Grouped for audio during the Export via QT Conversion.
If that doesn't work, you could always paste additional audio tracks onto your movie in QT Pro. After all, you'll need to tweak your language settings for audio track in QT Pro.
But where have you seen this implemented to do a Director's commentary-type option? I've read that multiple (discrete) audio tracks work only if they're tagged as different languages and the user's playback system is setup for one of those languages. (But I've been wrong before...)
And welcome to the forums.

MP4 - anamorph flag and multiple audio tracks

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