An LTC, Linear Timecode, is required if you want to quickly and accurately sync your sport data with video. There are two options to generate the LTC Timecode: Protern Clock and Dish. Here we go into the pros and cons for each.
If your camera has a microphone port, then you can include an LTC timecode. There are two options available to generate extremely accurate LTC timecodes that can be synced with GPS timecoded data: Protern Clock iOS app and Dish.
What is LTC?
LTC, or Linear Timecode, is an audio timecode that certain software can decode to understand exactly when each frame of the video was recorded. It was developed over 40 years ago for the Film and Television industry. In order to link video with GPS timecoded data (i.e. Protern data), the LTC needs to record Universal Coordinated Time and date (UTC).
We have outlined the differences between the options, and go into more detail further down this article.
GoPro, DJI and Insta360 users: If your action camera has a GPS built in, you won't need a microphone port or LTC Generator. Telemetry Overlay can automatically read the GPS timecode from many action cameras.
Comparing Protern Clock iOS App and Dish
Protern Clock iOS app
|Price:||App Store, $9.99||Protern Store, $429.99|
|Description:||iPhone or iPad App||Dedicated hardware attached to the video camera|
|Availability:||Immediate download||Shipping, 1-2 weeks|
|Best For:||Small teams; occasional video||Large teams; heavy video use|
3.5 mm audio cable; Lightning or USB-C adapter depending on iPhone or iPad model
|2 AA batteries; Shoe attachment and 3.5mm audio cable are included|
|Use with existing camera:||✅||✅|
|Internet Connection Not Required:||
(Uses the Internet to acquire time)
(Uses GPS to acquire time)
|Record run commentary:||❎||✅|
|Instructions:||How to use Protern Clock||How to use Dish|
|Pros and Cons for Protern Clock||Pros and Cons for Dish|
Protern Clock iOS App - Pros and Cons
Where to buy: App Store, $9.99
Dish - Pros and Cons