What is Video Annotation?
For all of these tasks, it’s crucial that each frame of video in your dataset is accurately labeled. A human-annotated video dataset can have a transformative impact on machine learning models in a range of industries, from autonomous vehicles to manufacturing. At Lionbridge, we’ve spent decades accumulating the experience and technology necessary to serve all of your video annotation needs. Whether your project requires simple or complex labeling, every dataset that we create has the accuracy to improve your machine learning model.
Why Lionbridge?
Customizable Workflow
If you have specific requirements to fulfill or want to keep your data private, Lionbridge has a workflow to suit your needs.
Expert Annotators
We train every contributor to ensure that their labels are accurate and appropriate for your project.
Quality
Our quality assurance system combines technology with human experience to comprehensively analyze each of your data points.
Our Video Annotation Services
2D and 3D Bounding Boxes
Our expert annotators draw 2D or 3D bounding boxes around objects in video for a wide range of use cases. Thanks to our custom-built workbench, we’re able to create multiple precise bounding boxes within every frame of your video. Our rigorous quality assessment also ensures accurate annotations.
Polygons
Lionbridge provides you with the team, platform, and project managers you need to draw pixel perfect polygons around objects in your frames. Designed with your use case in mind, our platform has been built to annotate irregular objects with a high degree of accuracy.
Landmark Annotation
We offer fast, efficient keypoint annotation over multiple frames for a range of use cases, including facial recognition, emotion detection, and counting applications. Our platform has extensive capabilities that allow us to accurately label anatomical or structural points of interest in your data.
Semantic Segmentation
Lionbridge has experience building video datasets with pixelwise annotation for clients in a diverse range of industries. Our project managers draw on years of experience to ensure that each frame is pixel-accurate and conforms to your specifications.
How it Works

1. Project set-up
Our team will work with you to develop a custom solution based on your project objectives and timeline.


2. Production
Our crowd of multilingual experts get to work evaluating and reviewing your advertisements.


3. Delivery
Our project management team check, package and format the data before being sent to you for final approval.

Our Video Annotation Solutions
Object Localization
Lionbridge provides video classification and localization services for a range of project types. By combining our versatile tech platform with the experience of our project managers, we can design a custom workflow for bounding box, polygon or line annotation that suits your project’s specific requirements.
Object Detection
For any computer vision project, it’s essential that your dataset has accurate annotations for both multiple classes and multiple instances of each object in your classification system – often within the same frame of video. Lionbridge can establish a high level of accuracy across your entire dataset in a range of annotation types.
Video Tracking
Footage with frame by frame tracking is an important tool for anyone creating a machine learning algorithm in the autonomous vehicles sector. Lionbridge’s workflow ensures that annotated objects in the first frame are accurately followed through subsequent frames. Our keen eye for detail will ensure that every movement of your object is captured.
WE SUPPLY THE WORLD’S LEADING COMPANIES WITH VIDEO ANNOTATION OUTSOURCING
Video Annotation Pricing
The Lionbridge platform streamlines much of the process, allowing us to offer the most cost-effective video annotation solution in the industry. Contact us to get a free estimate for your project.
- Account Manager
- Project Management
- 24/7 Support
- API
- NDA
- Volume pricing
- Custom reporting
- Enterprise-grade SLAs
- Custom invoicing
- Consulting services

Multilingual Audio Transcription Services
Lionbridge provides custom audio transcription services in over 300 languages. Some of our most popular languages include:
- Chinese audio transcription services
- Dutch audio transcription services
- French audio transcription services
- German audio transcription services
- Italian audio transcription services
- Japanese audio transcription services
- Portuguese audio transcription services
- Spanish audio transcription services