Avid Insider 2

This page is in reference to the Avid Insider Event that was held in Los Angeles on December 7th 2005. For more information on Avid Insider events, please visit:
Avid Events

The presentation from that evening is available as a PDF here. The presentation on 23.976 verus 24 is available here.

Audio Sample Rate "ReStamp" Tool

These tools are provided "as is" for very specific workflows as defined below.

DOWNLOAD BWF RESTAMP TOOL FOR MAC OSX 2/27/06 with bug fix

DOWNLOAD BWF RESTAMP TOOL FOR WINDOWS XP 2/27/06 with bug fix

There is a feature in later versions of Avid Media Composer Adrenaline and Avid Xpress Pro that adjusts for the .1% duration differences between 23.976 and 24 frame project types. This is found in the Audio TAB of the IMPORT settings and is called "Convert source sample rates with audio pull-up or pulldown to project sample rate on import."

If the BWF file has a sample rate other than the project type, it will adjust the speed (duration) by speeding up or slowing down the BWF file(s) during the import and perform a sample rate conversion.

For example; files stamped as 44048 or 47952 and imported will differ by .1% in duration from the original file at 48000 samples. The conversin will also correct for the timecode due to the change in sample rate so that the original timecode is maintained.

The basic rules of thumb are:

For a file that is too short by .1% once imported, you will want to stamp it as 48048.
For a file that is too long by .1% once imported, you will want to stamp it as 47952.

Directions for Windows XP version

Using this programs is easy; you drag .WAV files to the icon, and they will be stamped with whatever sample rate the file name of the application is set to:

For example,

Change the file name of the application to "ConvertTo48048" (without the quote marks) to mark the file as 48048.
Change the file name of the application to "ConvertTo47952" (without the quote marks) to mark the file as 47952.

The programs are actually all the same, you can change what they do by changing the name. For example, if you make a copy of one of them, and rename it to "ConvertTo96000.exe", it will take any .WAV file and mark it as 96Khz.

Directions for Mac OSX version:

Drag the folder "ConvertTo" to your login folder. It is important that it be in your login folder, and that you keep the name "ConvertTo", because the scripts inside refer explicitly to "~/ConvertTo", which always looks in your login folder to find it.

Inside this folder, there are command line applications, and corresponding applescripts (ending in "Drop") that will accept drag & drop .WAV files for conversion.

If you drag files to one of the "...Drop" files, it will launch the terminal application and run the conversion for you, just as it does on Windows.

You can put the "...Drop" scripts anywhere (such as the desktop), but for the scripts to work the command line programs must be in "~/ConvertTo".

The command line applications work the same as the Windows counterparts, and can be renamed with the same rules for use from the Terminal shell to make new applications; however, to make new drag & drop applications, the Applescript wrappers have to be edited to change the name of the command line program they invoke. If you want to make new ones, it's an easy change; Drag one of the "...Drop" files to the Script Editor application, and change the name of the file in the "set theCommand to" line right near the end, then do a "Save as..." to a corresponding new name.)