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Datasets:
katana-video
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webcodecs-codec-support

Tasks:
Tabular Classification
Modalities:
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text
Size:
100M - 1B
Tags:
webcodecs
video-processing
hardware-acceleration
telemetry
browser-support
av1
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metadata 
license: cc-by-4.0
task_categories:
  - tabular-classification
tags:
  - webcodecs
  - video-processing
  - hardware-acceleration
  - telemetry
  - browser-support
  - av1
  - h265
pretty_name: WebCodecs Codec Support Dataset
size_categories:
  - 100M<n<1B

The upscaler.video Codec Support Dataset

Dataset Summary

This dataset contains real-world audio and video codec support data passively collected from 1,142,586 unique user sessions at free.upscaler.video. It uses the WebCodecs API to detect both encoding and decoding support for over 1,000 codec variants across major audio and video codec families (H.264, H.265, VP8, VP9, AV1, AAC, Opus, etc.).

  • Total Tests: 363,330,358
  • Sessions: 1,142,586
  • Unique Codecs: 1,087
  • Collection Period: January 2026 - March 2026
  • Primary Origin: 10.5281/zenodo.19187467

The data is compiled and interactively summarized on the project website, webcodecsfundamentals.org, which provides a global overview of real-world hardware acceleration across operating systems and browsers.

Dataset Structure

CSV Schema

  • timestamp - ISO 8601 timestamp of when the test was performed
  • user_agent - Full browser user agent string
  • browser - Browser family (Chrome, Safari, Edge, Firefox, Unknown)
  • platform_raw - Raw platform identifier from navigator.platform
  • platform - Normalized platform (Windows, macOS, iOS, Android, Linux)
  • codec - WebCodecs codec string tested (e.g., "av01.0.01M.08")
  • encoder_supported - Whether VideoEncoder supports codec (true/false)
  • decoder_supported - Whether VideoDecoder supports codec (true/false/empty)

Note: decoder_supported is empty for sessions before Jan 14, 2026. Encoder data covers all 1.14M sessions.

Platform Normalization

The platform column applies the following normalization to the raw navigator.platform value:

  • Win32, Win64 ➔ Windows
  • MacIntel ➔ macOS
  • iPhone, iPad ➔ iOS
  • Linux armv8*, Android* ➔ Android
  • Linux x86_64, Linux aarch64 ➔ Linux

Dataset Creation & Methodology

Data was collected via client-side telemetry on the rendering engine at free.upscaler.video. A full breakdown of the collection methodology can be found here.

  • Producer: Katana Video Inc.
  • Author: Samrat Bhattacharyya

Citation Information

If you use this dataset, please cite the original Zenodo repository and the methodology report:

Dataset Citation (Zenodo):

@dataset{upscaler_dataset_2026,
  author       = {Bhattacharyya, Samrat},
  title        = {Real-World WebCodecs and AV1 Hardware Support Dataset},
  month        = mar,
  year         = 2026,
  publisher    = {Zenodo},
  doi          = {10.5281/zenodo.19187467},
  url          = {[https://doi.org/10.5281/zenodo.19187467](https://doi.org/10.5281/zenodo.19187467)}
}