Hi I have a TLV

[jhuysing]

Is there any way to pre-proccess a Tag Length File before it gets indexed?

[haley_swarnapat]

You'll need to write a script to read and extract your TLV into comma separated T=V

Example, if you are using 3 digits decimal TLV, your script should have input/output as follow:
Input: 001005Hello999006World!
Output: T001=Hello, T999=World!

If your script works, you can use Splunk scripted input https://docs.splunk.com/Documentation/Splunk/6.4.3/AdvancedDev/ScriptSetup

[richgalloway]

What do you mean by "pre-process"? What do you want to do to the file?