Converting 2 channel audio from AVCHD to 5.1 audio for bluray

Hello,
I am looking to put AVCHD video files (*.MTS) containing 5.1 audio and 2-channel (stereo) audio onto bluray. I would like to convert the 2 channel audio to 5.1 audio, so that all of the files can be encoded onto bluray with 5.1 audio in Encore. I am using Premiere Pro CS6 version 6.0.3. I have tried to bring the MTS files into Premiere Pro, and convert stereo audio to 5.1 using Audition. However when the file is exported to Encore, upon transcoding there is no audio. Please let me know what is the best way to resolve this. Also, would I require something like Surcode plugin, or are there other ways to get around this? Thanks.

"Hi seaspray07,
"Hope this clarifies."
sorry it doesn't - it confuses me and I don't get why you want to do it this complicated way ;-)
1. If you have problems try to simplify your workflow. Why do you try to work with dynamic link in Encore? This isn't the classic route and I don't see why you need it in this case.
2. In a classical workflow you load final encoded audio and video files in Encore - in this case a .m4v and a .ac3 file encoded in Adobe Media Encoder.
3. To get this files you create a Premiere timeline with 5.1 master audio and load your clips onto it.
For all 5.1 clips Premiere will create a 5.1 audio track. For all stereo clips Premiere will create a stereo audio rack.
--> Keep in Mind you can't export a premiere audio track. That isn't possible even though this would be handy in a lot of situations. You alway only export the master audio track of a timeline. That master audio track get's it input from all audio tracks of a timeline. If there is a 5.1 audio track 6 channes are mixed to the master audio - if it's only a stereo track only L, R get's mixed up to the 5.1 master.
The master audio track is what you can hear if you play back a timeline.
4. Why do you want to convert stereo audio tracks into 5.1 audio tracks in the timeline? It needs much more filesize/ ram slows down your playback and gives you a unhandy viewing with lots of emty audio channels... Why dont store and view a stereo track as a stereo track?
5. If you have placed your stereo and 5.1 audio tracks on the timeline you can export the final mix via Adobe Media Encoder with the Surcode plugin as Dolby Digital 5.1 .ac3
"I sent the audio to Audition because I wanted to modify the audio file from stereo to 5.1, and bring it back into PrPro to combine with the video clip from the corresponding MTS file..."
That doesn't make any sense... because Premiere does it automatically for you without Audition. You simply have to do nothing - just place your stereo clip on the timeline and ready.
If you want to use Audition you have to have a real reason for it - for example do extensive audio work and mastering Tasks - conform it to R128 loudness or something like that.
Does this make sense to you? ;-)

Similar Messages

Can you convert a favourites file from windows to a bookmark file for mac?

can you convert a favourites file from windows to a bookmark file for mac?

I can't answer for Internet Explorer but you should be able to export Bookmarks from FireFox. If you can't export from IE you may be able to import from EI to FireFox first.
In FireFox, menu BookMarks>Organize Bookmarks, then in the pane which opens, menu File>Export (that's how it works on Linux so Windows should be broadly similar). The result should be an html file.
You may be able to import this into Safari on your Mac; certainly you should be able to import it into FireFox and perhaps from there to Safari if necessary.

Converting left channel audio into stereo file

I'm using an edirol ua 25 which has two inputs, 1 which is a left channel and 2 a right channel. As i'm using the first input, the recorded audio pans hard left, how do I go about converting the recorded audio into a central stereo file?

Why do you want to change it to stereo? It isn't a stereo (two-channel) recording, it's a mono, single-channel recording.
Mono is not somehow "worse" than stereo, don't feel that need that everything should be recorded to two channels, it's a waste of resources.
You can pan it anywhere in the stereo field - with the pan knob central, the mono track will be centered in the stereo field. You can pan it left or right accordingly.

Encore CS4 & 24 bit audio for Bluray?

Hey all,
Working on authoring my first bluray of a concert we shot in HD and recorded the audio in 24 bit / 48khz. I can't seem to find an option in the Encore settings that address the 24 bit output option. It seems that you can switch between Dolby Digital or PCM. PCM defaults to 16bit... and Dolby only allows up to 448kbps.
Is is possible to create a bluray out of encore with 24bit audio?
Thank you,
Harry

Harry,
I cannot address your question directly, but there are several posts to this forum on 24-bit Audio. Neil Wilkes has addressed those. I'd do a search of this forum for "24-bit audio," and then filter on People, choosing Neil Wilkes.
Good luck,
Hunt

Converting 2 channel into 5.1 possib

Is it possible to convert 2 channel audio into 5. with "Creative Audio Converter"?
Thank you.

kamurj,
You can check this Knowledgebase article to have a better understanding of what Shingo-Y mention.
http://us.creative.com/support/kb/ar...p?l=2&sid=4428
Jason

Accessing center channel in Sony AVCHD video AC3 audio (5.1 surround)

I have tons of video shot on Sony HDR-CX7 and HDR-CX12 camcorders (AVCHD) in 5.1 stereo. iMovie '09 and Final Cut Express import the audio as two channel stereo, which is normally fine for a consumer app.
I use a Sony wireless microphone to record interviews, and I normally set the camera to record only the monophonic microphone audio. But, there is also a setting to let the camera record 5.1 stereo from it's built-in microphone, and use the wireless mic as the center channel audio.
I have footage recorded this way, and I find that when I play it back in stereo, I get a slight delay/echo caused by the wireless mic recording voices, and the camera recording voices (slightly offset). I cannot use the audio this way.
I want to extract the center channel audio from the AVCHD .mts files. I can then line that audio up with the video in Final Cut Express (or even overlay it in iMovie '09).
Does anyone know of a free utility that can strip out audio from AVCHD files?
It looked like Handbrake might work, but it errors out when it tries to convert more than two channel audio.
I believe the AVCHD audio is AC3 format, so if I can strip that out, Quicktime is able to mute the other surround channels.
Any tips?

Here is my current status, and a work-around method to accomplish this.
First, using "ffmpeg" it is possible to extract just the .AC3 audio stream from a .MTS AVCHD camcorder file. I have tried to do this with the Mac OS X GUI version, ffmpegX, but it errors out. It looks like it is sending the wrong parameter to ffmpeg internally (or perhaps it is using a different ffmpeg command I have on my machine). Anyway, the command looks like this:
ffmpeg -i 00000.MTS -acodec copy audio.ac3
That will extract just the audio stream from within the MTS file (which is an AC3 file). By default, you cannot play .AC3 files in QuickTime. It turns out, I had "Perian" installed, which is an extension for QuickTime that allows it to play a bunch of other files. One of the settings was a Stereo mode, which was causing anything I tried to play mix down to stereo. Aha! So, I could toggle that off and actually get to the audio track I wanted.
BUT, since native Mac OS X does not read .ac3, my workaround is to again use ffmpeg to convert the .ac3 file to a .aac:
ffmpeg -i audio.ac3 -acodec ac3 -ab 512k audio.aac
Since the source AC3 file was 448kb/s, I just manually chose 512k as the conversion rate, so it shouldn't lose too much quality. That value can be changed to decrease file size.
The end result, "audio.aac", is now a 6 channel 5.1 audio file. You can open it in QuickTime, and go to Window->Show Movie Properties then select the "Sound Track" track, and the "Audio Settings" tab of that track, and you will see tracks 1-6 (Left, Center, Right, etc.). You can toggle the tracks off to get to the one you want (in my case, just Center).
From there you could export this out to a file with just the track you selected, or drag the .aac file in to Final Cut Express.
If you drag in to Final Cut Express, you will see it takes up five audio tracks. I drug this under the original imported video track, and was able to mute the ones I did not need. I also found I could unlock the audio from the video, and then delete the ones I didn't want, just to clean up the edit window a bit.
The end result is now I can import the AVCHD file in to Final Cut Express, and bring in this converted AAC under the video to access just the center audio I wanted.
When I have time to streamline this process a bit more, I will update this topic.

How can I Import 2 channel audio from a Sony PMW300 camera?

How can I Import 2 channel audio from a Sony PMW300 camera?

Terry Woolf
Thanks for the reply.
The link to your prior thread is
Audio
I suspect that the issue of no audio for your .mp4 file goes to your conversion method MXF to .mp4.
Please excuse if I am saying what you already know. When you import your video into Premiere Elements (in your case 12 Mac), a project
preset is established, either by you manually or the project automatically. That project preset contains a description of the project settings
for audio as well as video. Unless you select one of the project presets which are described for use with 5.1 channel, your audio in video audio
imports into a stereo project. It is in the export area that you will find your opportunity to customize (if necessary) the settings for audio.
In the project, if applicable to your situation, you can duplicate an audio channel (See Fill Left or Fill Right under fx Effects/Audio Effects).
Please let me ask this to make sure of the details.
If you import your .mp4 with 2 channel audio (derived from your .mxf convert and dragged to Video Track 1/Audio Track 1) and cannot hear the sound....
a. do you see any evidence for an audio file in the Timeline Audio track 1?
b. if you do, how many wave forms do you see, one or two?
c. if you have the audio meters opened while you are playing back the Timeline content in Edit area, do you see 1 or 2 channels and is
there activity in both.
d. when you import the file into Project Assets, do you observe any conforming activity going on in progress bar in the lower right cover of the workspace...if
so, do you wait for it to go to completion before continuing on?
We could also try deleting the conformed audio in the Media Cache Files Folder to force the program to re-conform the audio. See Edit Menu/Preferences/Scratch Disks should show you the location of the Media Cache Files Folder whose contents you will be deleting.
Please review and consider, and then let me know if I targeted your question. If not, please do not hesitate to let me know, and I will rethink my reply based
on your response.
Thank you.
ATR

Multi channel audio outputs from a laptop such as 5.1 or 7.1

is it possible to get multi channel audio outputs from a laptop such as 5.1 or 7.1 for watching Movies or television while using Windows media Center.

Ok so i order to help anyone who is interested.
The only ironic solution to this problem i found was to use a plugin called xto7 to convert the xml to the old fcp7 format.
i then imported this into premiere pro.
this was then able to export an OMF that when imported into logic 10 that was using the correct 6ch mono setting as separate tracks.
Insane but it works until Apple fixes the incorrect meta data import in FCPX that sets the xml export to the default import that is always surround.
this is the only way i was able to send stems with all the edit points and fades for the sound editor.
If you don't have premiere lying around you maybe able to do it with fcp7 too we just didn't have it in this studio.
Fingers crossed Apple fixes the fcpx xml export.

No multi-channel audio from DVD Player or Quicktime?

I have the A52Codec 1.7.6 installed. The codec preferences are set to output multi-channel audio. I have my Audio MIDI setup speaker configuration setup for multi-channel audio and the speaker assignment tests are all perfect. VLC plays back files with AC-3 soundtracks in perfect 5.1 multi-channel sound. Final Cut plays multi-channel audio properly as well.
When I watch a DVD, it is decoded to stereo. The dialog on 5.1 always comes from the left and right speakers and never from the center channel. It doesn't matter whether I remove the A52Codec and try again the result is aways the same, 5.1 audio in Quicktime and DVD Payer gets decoded to stereo. It is not that extra channels are missing, if that were true I'd get no dialog at all.
What do I have to do to make the DVD and Quicktime multi-channel audio decode as multi-channel audio and not stereo.

I'm not sure if this will resolve your issue or not, but have you configured it using /Utilities/Audi MIDI Setup ?

How get one channel of data from two-channel audio file?

I need to either convert a 2-channel audio file to 1-channel or else get just one channel of data (does this lose some sound?) for a calculation. How would I do that?

In terms of a loop over byte[] data, double[] left, double[] right...
8-bit mono
for (int i = 0; i < data.length; i += 1) {
left[i] = (double)data;
16-bit monofor (int i = 0; (i*2) < data.length; i++) {
left[i] = ((double)data[2*i] << 8) + (double)data[(2*i)+1]);
8-bit stereofor (int i = 0; (i*2) < data.length; i++) {
left[i] = (double)data[2*i];
right[i] = (double)data[(2*i)+1];
16-bit stereofor (int i = 0; (i*4) < data.length; i++) {
left[i] = ((double)data[2*i] << 8) + (double)data[(2*i)+1]);
right[i] = ((double)data[(2*i)+2] << 8) + (double)data[(2*i)+3]);

Why does compressor settings of aac audio, stereo, create 2 channel mono from 2 discrete audio channel movies?

Why does compressor settings of aac audio, stereo, create 2 channel mono from 2 discrete audio channel movies?

well depending on how your audio is brought into your system you can select it as two streams of mono or a stereo pair. In reality, unless it's mixed in stereo, that's just two streams of mono locked together. Other streams brought in via other means, can have a lot more audio channels, e.g. 8, 16, 24.
In your case, with what you're doing, two separate channels works best, so you can control the levels of two very different audio sources. If, for instance, you were taking the feed from the mixing board during a concert, you might want their stereo out. Otherwise you might be dealing with the 1.2 zillion channels that they're mixing live.
I like separating the tracks coming in. I work with people who prefer to lock them together. Locking means the tracks move together during editing. Ok, fine, but I'm usually dealing with different audio sources, like you are: a camera mic (safety on location) and a close mic (shotgun, lav). Or I have a shotgun source and a lav. I want to determine the best source audio for the shot. Sometimes it's a lav, sometimes a different feed from somewhere else, sometimes the shotgun, and sometimes a mix of two sources. But if they're locked together and pre-set to come out evenly from both speakers there no way for me to make a determination. The other guys like to cut and figure out the audio later.
To each his or her own. . .

Convert a channel from Hexidecimal to Decimal

Is there an easy way to convert a channel from HEX to Decimal without having to change every individual measurement.
I am currently using the following command:
HEXnumCOVNVERTED = (CLng("&h" & HEXnumTOconvert))
Just curious if there was an easier way around this.
BBANACKI

Sure,
and you can use the same command for it. Simply use the DIAdem Calculator, which is capable of doing the calculation for a complete channel - row by row.
The syntax would be something like: ch("dec") = CLng("&h" & ch(1))
In the formula, replace Ch(1) with the channel you would like to convert.
Ingo Schumacher
Systems Engineer Sound&VibrationNational Instruments Germany

Always asynchronous audio if I export an MXFop1a file with 8 channel audio from Premiere 2014.1 for delivery to XDCam HD U1 Sony.

I try now for hours to export an MXF op1a with 8 channel audio from Premiere CC2014.1 and with AME 2014.1 to copy the file on my XDCam drive u1 to a disc.
The file is always asynchronous after 20 or 30 minutes. The project is synchronous and also other codecs are synchronous if I export them. So I think it's a bug...
I use the newest Sony XDCam drivers. Also parts with no audio can't be render with intelligent render. If I use this option, Premiere or AME crashes...
I work on a mac system with 10.8.5 OSX.
Does anybody have the same problems or any ideas to solve my problem...
Best regards,
Florian

The following will answer both your questions a) and b).
Click on your master timeline and press cmd+0 (zero) to bring up Sequence Settings, then click on the Audio Outputs tab on the right. Click on the Outputs option and change it to 6. You can leave them as Stereo pairs.
Now, back on your timeline, you need to make sure all your audio is organised so each track. A1, A2, A3, A4 etc has all the relevant media on it.
Then, on the left of the timeline you see the Destination toggle buttons, then you see the Padlocks to lock tracks, then you have the Toggle Auto Select squares. If you right-click on the Toggle Auto Select squares you bring up a little sub-menu, at the top of this list you'll see Audio Outputs, which will show the stereo channels for that particular track. As you've changed the number of Audio Outputs in the Sequence Settings, the list will show: 1&2, 3&4, 5&6. You just tick whichever channels you want.
In your case, you have dialogue on the first 4 tracks, no problem, just go down through tracks 1,2,3 and 4 as described above and assign these to Audio Outputs 1&2.
Then just go down through your music and effects audio tracks and assign them accordingly.
Now, when you export your timeline as a self-contained media file, it will have different audio channels.
I hope that makes sense. When you change the number of audio outputs as described in the first step, I believe the rest of it is fairly self explanatory, once you know where the settings are.

6-Channel Audio not obtained from MB KT4V

KT4V MB doesnot deliver 6-channel audio output through line-in ,mike-in and
My MB KT4V does not deliver 6-Channel audio output using line-in ,line-out and mic-in socket onthe back panel as explained in appendix of Quick User's Guide. ;(
Shyamal X(

Ok so i order to help anyone who is interested.
The only ironic solution to this problem i found was to use a plugin called xto7 to convert the xml to the old fcp7 format.
i then imported this into premiere pro.
this was then able to export an OMF that when imported into logic 10 that was using the correct 6ch mono setting as separate tracks.
Insane but it works until Apple fixes the incorrect meta data import in FCPX that sets the xml export to the default import that is always surround.
this is the only way i was able to send stems with all the edit points and fades for the sound editor.
If you don't have premiere lying around you maybe able to do it with fcp7 too we just didn't have it in this studio.
Fingers crossed Apple fixes the fcpx xml export.

5.1 Channel Surround from iMovie

Greetings,
I have some AVCHD video clips taken with my Sony Camcorder and already downloaded to my computer. I use ClipWrap to re-wrap the videos so that iMovie can at least import them into timeline (as iMovie does not natively support M2TS videos). So far so good, I can also make video edits and everything.
Now when it comes to sharing the final output movie, from the menu I use Share > Export Using QuickTime (I use this option because only this option lets me apply deinterlacing to my videos which I need) > Options > Sound > Settings. In the Sound Settings options panel, I do see various formats including Linear PCM, AAC etc, and in the Channels section I see 2 Discrete Channels, 2, Stereo (L R), and many other formats (like 5.1, 6.1 etc.) which are all grayed out. As a result the exported movie only gets 2 channels of audio.
My original source file contain 5.1 channel sound, so is it NOT possible to maintain the 5.1 channel audio while exporting a movie from iMovie 11 (version 9.0.8) using the above method I described? Is there an alternative method to export and maintain the 5.1 channel audio, or is it just not possible using iMovie?
Thank in advance.

iMovie and FCPX both offer transcoding of AVCHD to an editing codec. In iMovie, it is transcoded to Apple Intermediate Codec. In Final Cut Pro X, AVCHD is transcoded to ProRes 422. In Final Cut Pro X, you have the option of editing natively in AVCHD, but most Pros will transcode to ProRes 422, because speed and quality of editing is more important to a Pro than saving on disk space. For why this transcoding is done, see this post. https://discussions.apple.com/docs/DOC-3941
Both iMovie and Final Cut Pro X also can do analysis for stabilization, analysis for rolling shutter, etc. FCPX can also analyze for color, sound problems, and maybe more.
With Final Cut Pro, the transcoding and analysis do not slow you down, because it can happen in the background. You can start editing immediately.
Also, you mentioned that you are converting m2ts files for use in iMovie using ClipWrap. iMovie and Final Cut Pro X both handle m2ts from Sony quite well with no need for an external converter. So I assume you must be shooting 60P, which iMovie does not do. FCPX will import 60P with no need for an external converter.
Final Cut Pro X has similarities to iMovie, but it is much more complex, because you have fine control over everything. In addition to the $300 price tag, you might want to also budget for some training. There are good video-based training resources from Ripple Training, Larry Jordan, and also some free Tutorials on YouTube. THere are also good books on FCPX. The best books I have found are these from Edgar Rothermich -
http://www.dingdingmusic.com/DingDing/Manuals.html

Converting 2 channel audio from AVCHD to 5.1 audio for bluray

Similar Messages

Maybe you are looking for