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How to edit a multiple audio video clip on Premiere

Nov 8, 2011 1:18 PM

Tags: #audio #import #dxtory

Hello everybody

 

Maybe this is a dumb question, I'm sorry if I'm asking what is obvious for you, but I swear I tried to find on the web and on this forum, but I couldn't find anything.

 

Well, I made a video using a screen capture software called Dxtory, that provides me the ability to record my PC screen, with multiple audio tracks.

 

Ok, now I have a 15gb avi file. When I open this file in the Media Player Classic, I can play one or both channels. The first channel is the original audio captured from my PC. Every audio generated by my PC is in this track. The second track is my voice, with my commentaries. I have all of this in one single file. They are not splited. It's just one file.

 

Then when I import into Premiere, the software just recognize the video track and the first audio track. I can't find the second, with my voice.

 

I know I can split the clip into 3 files (1 video and 2 audios) but it would take longer. I just want to drop the file on Premiere and edit the audio volumes quickly, because when I talk I would like to low the volume of the PC audio.

 

Now, the question: Is there a way to Premiere recognize both tracks in this single file? How?

 

 

 

Thanks in advance for any help.

 
Replies
  • Currently Being Moderated
    Nov 8, 2011 1:22 PM   in reply to Danilo Salvego

    Is the clip recorded with stereo audio (e.g. left and right channel) or is it dual mono? The Preview Area in the Project Panel should tell you this when select the clip, or you can right-click and select Properties.

     

    Where in Pr are you playing back the clip? In the Source Monitor, or in a sequence? The Source Monitor will only play back one audio channel (that's why I asked if it was dual mono) at a time. However, if the clip is being recognized properly, you should still be able to drop it into a sequence and edit both channels individually, as they will be placed on two mono tracks.

     
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    Nov 8, 2011 1:38 PM   in reply to Danilo Salvego

    I don't think you have two stereo tracks--I think you have two mono tracks. It's entirely possible that Pr just can't use multiple mono audio tracks in an AVI--I work with QuickTime files all the time with multiple mono, so it is possible from a generic standpoint.

     

    Could you record a very short sample, and upload it somewhere to test? If you need an FTP, please PM me and I'll set you up. I'm sure there is a way around it.

     
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    Nov 8, 2011 3:15 PM   in reply to Danilo Salvego

    I cant hear the audio with your test part using WMP or VLC  but when I play it using G-Spot I can hear the test voice.

     

    picture074.jpg

     

    picture075.jpg

    Havent tried with Premiere yet.

     

    Glenn

     
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    Nov 8, 2011 3:20 PM   in reply to Danilo Salvego

    WMP and VLC on my system only play the first stereo track.  I can force VLC to play the second stereo track, but it won't play both sets of stereo tracks together.  It's possible that installing the dxtory codec would change that behavior, but it won't help in Pr.  Dxtory is 32-bit only, and Pr needs a 64-bit codec.  Pr can see the video despite the lack of the codec being installed because it's a flavor of MPEG4 that Pr's native MPEG4 importer can interpret.  But that importer doesn't know what to do with the second stereo track, just like WMP doesn't know what to do with it when the dxtory codec isn't installed.

     

    -Jeff

     
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  • Currently Being Moderated
    Nov 8, 2011 6:28 PM   in reply to Danilo Salvego

    Try using Audacity. Import the AVI file as a RAW file and then export as a WAV file. It will contain loud static, but your voice narration is there. You just have to play with it and eliminate the static and keep your voice. Best to use Audition to edit the saved WAV file rather than PrPro.

     

    Hope this helps.

     
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    Nov 8, 2011 7:24 PM   in reply to Danilo Salvego

    I'm actually surprised that Pr can import this at all--the video is Xvid. Maybe it's some variant that Pr's importers can handle, as Jeff suggested. I dunno--it doesn't play well for me, regardless, and I'm not going to install the Dxtory codec to find out.

     

    Anyway, to the matter at hand: while AVIs can, apparently, contain multiple audio tracks, Pr's importers are limited to a single track. However, Pr has other importers than can handle multiple audio tracks. QuickTime--which is a wholly different process--supports multiple audio tracks, as does MXF (some flavors). However, Xvid in QuickTime (which is feasible) won't import in Pr (at least on a PC), and Xvid won't go into an MXF file at all; that means you'd have to transcode. Personally, this would be my choice--but I found that the original clip played back pretty terribly, so that would be why I'd go that route.

     

    Additionally, you could extract the second audio track to a separate WAV file, import both the AVI and WAV, and then use the Merge Clips feature to marry them together as one pseudo-clip. Not perfect, but it would work. The benefit is that you don't re-encode anything.

     

    So, I've got solutions for both the re-encode/MXF option (my preference) and the AVI/WAV option. Here's proof of the MXF (transcoded video to XDCAMHD422 50Mbps) with four audio channels (stereo must be split to dual mono):

     

    xvidmxf.png

     

    At the end of the day, these (or a variation of them) are your only options. Pr simply won't import multiple audio tracks (even dual mono) in an AVI container. Let me know if you're interested in either of the solutions.

     
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  • Currently Being Moderated
    Nov 9, 2011 5:05 AM   in reply to Danilo Salvego

    I can understand the desire to keep it as simple as possible. If you want, I have a simple script that will extract the second audio track to a separate WAV file, so that you can do all the files in a batch without having to do each one individually. Let me know if you want that.

     
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    Nov 9, 2011 7:40 AM   in reply to Danilo Salvego

    Alrighty, then...

     

    Download this file first: http://www.mediafire.com/file/vl67maant5i6n81/avi2wav.zip. Extract the two files inside it into your folder containing the AVIs. Then, just double click the "avi2wav.bat" file. This will run a batch and extract the second audio track from all of the AVIs to new WAV files with the same name as the original AVI, e.g. ABC.avi and ABC.wav.

     

    When the entire folder is processed, import both the AVIs and WAVs into Premiere Pro. Pr will still only recognize the first audio track in the AVIs, but the WAVs will be your second audio track. In the bin/Project Panel, select each pair of files, right-click and select Merge Clips; this will create a new merged clip with the original video, and four mono audio tracks. Merged clips only can have mono tracks, even though both of the originals were stereo. If that's a problem, just skip the Merge Clips step and drop both clips into a sequence as stereo audio; you can link or group them if you like.

     

    Hope that helps a bit!

     
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  • Currently Being Moderated
    Jan 23, 2012 10:49 AM   in reply to Danilo Salvego

    I have exactly the same problem as  Danilo Salvego, recording a lots of game footage with DXtory gives me AVI files with mutliple audio streams. I am very disappointed, that Premiere, being my favourite video editing software, is not thinking of importing anything more than the first audio track to a video footage in an AVI. This surely is a great flaw and I hope Adobe will make it better in the upcoming verisons of Premiere.

     

    Thanks a lot, Colin, for writing that batchfile for ffmbc which extracts the second audio from the avi.

     
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  • Currently Being Moderated
    Jan 23, 2012 12:26 PM   in reply to Prskavka

    Can you rip the Audio Streams, and Save as PCM/WAV @ 48KHz 16-bit, for Import as discrete Audio files, into PrPro?

     

    Good luck,

     

    Hunt

     
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  • Currently Being Moderated
    Feb 2, 2012 6:28 PM   in reply to Danilo Salvego

    Yes, that's exactly what I do. I use VirtualDub to export that second audio stream as wav and import that into Premiere separately. The tool Colin presented works, but it works slower than VirtualDub.

     
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  • Currently Being Moderated
    May 18, 2012 9:16 PM   in reply to Prskavka

    Here's a much faster and simpler way I found on the Dxtory forums. Right click the AVI file and click Extract Audio Stream. DONE! You can now import the video and both streams in Pr. 

    An annoying bug in Dxtory 2.0.114 (latest of now): When holding the push-to-talk key whilst holding, for example, "W" (forward walk) and I press any other key, then let go of all keys, Dxtory will keep recording the mic until I press the talk key again. When it continuously records like that, pushing other keys won't stop the recording. I have to repush/tap push-to-talk to stop it, otherwise I hear keys clacking and ambient sounds. I don't see this problem mentioned anywhere on google.

     
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    Apr 8, 2013 7:10 AM   in reply to Jodeth1990

    Dxtory does not only come with a demuxer it also comes with a mixer (to mix all audiostreams to 1 audiostream). But either way... it's additional work that has to be done by the user and when processing many files it is a hassle when it shouldn't be any problem at all.

     

    Either Dxtory should be able to mix all audiosources to one track by default - while recording - like all other game recording programs offer; or Premiere Pro should finally import just everything that's in the videofile. The latter would be my prefered solution.

     

    I mean an AVI file with 2 audiostreams (e.g. 2 audio languages) is nothing alien and nothing new... just like a MKV with more than 1 audiostream... which Premiere Pro CS6  ignores completely (MKV that is).

     

    edit: I'm aware that this is an older thread but as I found it via google I assume other would find it too when searching for an easy solution to import an AVI with multiple audiotracks.

     

    Message was edited by: Mopsi Leet

     
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