Open source package for extracting and parsing telemetry associated with video streams and converting to common formats.
Project description
Open Telemetry Kit
The Open Telemetry Kit (OTK) is an open source package for extracting and parsing telemetry associated with video streams and converting to common formats. It comes out of a need for a singular API that can be used for multiple different video telemetry formats.
Telemetry that can be parsed includes: GPS, time, camera information, speed
Features:
- Automatically detect telemetry format
- Manipulate telemetry with ease
- Write telemetry to a new format
Getting Started
Dependencies
Python version: >=3.6
ffmpeg
and ffprobe
.
On Debian systems these can be installed with:
$ sudo apt install ffmpeg
dateutil
On Debian systems this can be installed with:
$ pip3 install python-dateutil
Installation
$ pip3 install open-telemetry-kit
Importing
The OTK package can be imported into your python3 project with:
import open_telemetry_kit as otk
Quick Start
Download the OTK Quickstart package with sample data
Download the OTK quickstart package (~90 MB).
(Mac users can install wget
using these instructions)
$ wget https://hivemapper-sample-videos.s3-us-west-2.amazonaws.com/OTK/OTK_quickstart.tgz
This includes a sample .csv
, .srt
, and .mov
with embedded telemetry.
It also contains quickstart.py
which you can use to extract the telemetry from the sample files.
Extract the package:
$ tar xzvf OTK_quickstart.tgz
This will extract everything into a new directory called OTK_quickstart/
The quickstart.py
script accepts a standalone .csv
or .srt
or a video file with an embedded .srt
.
It will read in the data, convert it to JSON, and write it to the provided destination.
Telemetry extraction and conversion example
In your terminal go to the new OTK_quickstart
directory.
Extract telemetry from the sample video:
$ python3 quickstart.py embedded_srt_example.mov embedded_srt_example.json
Extract telemetry from the sample srt
or csv
files respectively:
$ python3 quickstart.py srt_example.srt srt_example.json
$ python3 quickstart.py csv_example.csv csv_example.json
Note: This process will create a new JSON file containing the telemetry extracted from the sample file. The data is organized into an array of objects (or, in python terminology, a list of dictionaries)
Data manipulation example
For an example of simple data manipulation, open quickstart.py
and uncomment the lines:
# gps = Telemetry()
# for packet in telemetry:
# gps.append({ k:v for k, v in packet.items() if k in ['latitude', 'longitude', 'altitude']})
# write.telemetryToJson(gps, dest)
Rerun the script with one of the provided commands above.
Current Functionality
Input Formats
The OTK currently supports the following forms of telemetry:
.csv
files.srt
files- Most videos file with embedded telemetry encoded as a
.srt
(e.g. video taken with some DJI drone models) .gpx
files.kml
files- KLV/MISB embedded data
- Open Camera
.srt
Output Formats
- JSON
- CSV
Future Releases
Planned expansions and updates for the OTK include:
Input Formats
Output Formats
- geoJSON
Other
- Unit Tests
Project details
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Source Distribution
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