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Topic Title: Understanding Audio Recorder Bookmarks
Topic Summary: Looking for more information understanding how recorders add bookmarks?
Created On: 06/23/2020 08:53 PM
Status: Post and Reply
Linear : Threading : Single : Branch
 Understanding Audio Recorder Bookmarks   - mobleguy - 06/23/2020 08:53 PM  
 Unserstanding Bookmarks   - kkkwj - 06/23/2020 10:23 PM  
 Unserstanding Bookmarks   - mobleguy - 06/24/2020 02:05 PM  
 Unserstanding Bookmarks   - Mav - 06/25/2020 01:51 AM  
 Understanding Bookmarks   - mobleguy - 06/25/2020 02:23 PM  
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 06/23/2020 08:53 PM
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mobleguy
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My understanding is that Olympus can add a bookmark to a file being recorded.  I am curious what other recorders or appscan do this as well as how these things work?

What programs are able to read the bookmarks or even add a bookmark?  Is this something that is limited to Olympus Dictation Management System (ODMS) software?

In Audacity you can add labels/markers, with vlc Player you can add book marks, but it does not look like they can read eachother's bookmarks.

Any help understanding this would be helpful. 

 

 

 



 06/23/2020 10:23 PM
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kkkwj
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Probably each app implements a bookmark as a named timestamp offset into the audio file, and probably they all use a proprietary format for storing the information. I've never heard of an industry standard for audio-file bookmarks.

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 06/24/2020 02:05 PM
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mobleguy
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That was my fear.  My hope is that we are wrong. 

I know I have heard of at least one other 3rd party application that is able to use olympus bookmarks when playing back files.  I do not remember what that application's name was. But that suggest there is at least a chance there is int lock in.

I would like to be able to organize bookmarks. Even better would be a way to expand on them- add some text notes or insert another audio annotation.

 

 06/25/2020 01:51 AM
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Mav
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Hi!

 

This completely depends on the audio format and the manufacturer.

 

If your audio recorder uses DSS or DSS Pro, this file format (or at least the Olympus flavor) has special areas defined inside the file to store bookmark positions.

 

Other formats may or may not support bookmarks directly, sometimes you can store arbitrary, vendor-specific information in a file header area, but then it's up to the vendor which information is stored there and how it's handled.

 

Some time ago, Philips used (don't know for sure if they still do) separate XML files alongside their .wav files to store meta information.

 

hth,

mav

 06/25/2020 02:23 PM
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mobleguy
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I believe what some programs do is store time stamps in the metadata of the file and have those hook in with some sort of database... that is likely what philips did. 

I know very little about metadata... this was a good introduction for me

https://blogs.loc.gov/thesignal/2013/01/name-that-tune-adding-labels-and-descriptions-into-your-audio-files/

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