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Forums > User Community Forums > Audio, Video and Recording
Subject: Audio file formats supporting in Editor?
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e1j4xu7
Posts:1
10/12/2007 7:34 PM Alert 

We've recorded a training session using WebEx Recorder for the screen capture and Sound Forge for the audio. However, when we attempt to dub the resulting audio files created by Sound Forge in, we get a "Invalid WAV file or file format not supported" error. Are there certain settings for bit rates, samples sizes, channels, sample rates and/or formats (PCM, etc) that the recordings need to be saved at before the Editor will accept them?

Katherine
jjkd
Posts:23
10/12/2007 10:05 PM Alert 
Katherine:

This topic has been discussed fairly extensively before elsewhere, not sure if there's much documented in here or not. My understanding is that the 'audio import' feature of the Recording Editor was not orignally intended for customer use, and for all intents and purposes, can't be made to do what you want. If there's been a change to the Editor in more recent versions that allows this to work, I'd love to be proved wrong here.

--
Joe Kyle
--jjkd--
sean_kumar
Posts:11
10/18/2007 8:12 PM Alert 
Hello Katherine,

Before you start dubbing audio to the WebEx recording, please ensure that you are using the latest version of the Recording Editor. The latest version of the Recording Editor is v2.8. Follow Joe's instructions in the link below to download the latest version of the editor
http://community.webex.com/user/Forums/tabid/758/forumid/107/postid/2753/view/topic/ptarget/2753/Default.aspx#2753

The WebEx Recording Editor accepts only wav files to be imported to dub audio.
Yes, the wav file needs to be in a specific format and the format is 'CCITT u-Law'.

8 khz, 8-bit, Mono & Stereo are the only accepted bit rates as far as i've tested.

To convert your wav file to CCITT u-Law format you can either use Sound Forge or follow the instructions below for a simpler solution.

1. Launch the Windows Sound Recorder from Accesscories menu (Start - All Programs - Accessories - Entertainment - Sound Recorder)
2. Click File - Open and open the wave file u've created.
3. Click File - Save as
4. Click on the Change button under the Format option
5. Change the Format to CCITT u-Law - Click OK
6. Save the File now

Try importing the newly encoded wav file using the Dub audio function.

Hopefully, you should be able to import the audio file now to the recording.

Cheers.
Sean
jjkd
Posts:23
10/19/2007 10:03 AM Alert 
Sean:

Thanks for the tips! Not sure if this is new in 2.8, or just that the requirement for 8 KHz, 8 bit mu-law wasn't sufficiently documented before. This will come in handy, I've frequently wanted to post-process audio in something else, and then put it back.
--
Joe Kyle
--jjkd--
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