Datasets:
katana-video
/
webcodecs-codec-support

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================================================================================
The upscaler.video Codec Support Dataset
Version: 2026-03-22
License: CC-BY 4.0
================================================================================
OVERVIEW
--------
This dataset contains 363,330,358 individual WebCodecs API compatibility tests
collected from 1,142,586 real user sessions at free.upscaler.video.
Each row represents one codec string tested on one user's device, including
both encoder and decoder support data, along with the full browser user agent
string for detailed analysis.
DATASET FILE
------------
upscaler-video-codec-dataset-raw.csv (69.4 GB uncompressed)
CSV SCHEMA
----------
timestamp - ISO 8601 timestamp of when 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)
EXAMPLE ROWS
------------
2026-01-05T00:54:11.570Z,"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36...",Edge,Win32,Windows,av01.0.01M.08,true,
2026-01-16T23:58:08.560Z,"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36...",Chrome,Win32,Windows,avc1.64040c,false,true
Note: decoder_supported is empty for sessions before Jan 14, 2026. The second
example shows a codec that can decode but not encode.
QUICK STATS
-----------
Total Tests: 363,330,358
Sessions: 1,142,586
Unique Codecs: 1,087
Collection Period: January 2026 - March 2026
Data Source: free.upscaler.video
Encoder Data: All 1,142,586 sessions
Decoder Data: Sessions from Jan 14, 2026 onwards
PLATFORM NORMALIZATION
----------------------
The 'platform' column applies the following normalization:
Win32, Win64 → Windows
MacIntel → macOS
iPhone, iPad → iOS
Linux armv8*, Android* → Android
Linux x86_64, Linux aarch64 → Linux
The 'platform_raw' column contains the original navigator.platform value.
USAGE EXAMPLES
--------------
Python (pandas):
import pandas as pd
df = pd.read_csv('upscaler-video-codec-dataset-raw.csv')
# Calculate global encoder support per codec
encoder_support = df.groupby('codec')['encoder_supported'].apply(
lambda x: (x == 'true').mean() * 100
)
# Calculate decoder support (excluding empty values)
df_with_decoder = df[df['decoder_supported'] != '']
decoder_support = df_with_decoder.groupby('codec')['decoder_supported'].apply(
lambda x: (x == 'true').mean() * 100
)
R:
library(readr)
df <- read_csv('upscaler-video-codec-dataset-raw.csv')
# Filter for specific browser
chrome_only <- df[df$browser == 'Chrome',]
SQL (import to database):
CREATE TABLE codec_tests (
timestamp TIMESTAMP,
user_agent TEXT,
browser VARCHAR(50),
platform_raw VARCHAR(50),
platform VARCHAR(50),
codec VARCHAR(100),
encoder_supported BOOLEAN,
decoder_supported VARCHAR(10) -- 'true', 'false', or empty string
);
CITATION
--------
If you use this dataset in research or publications, please cite:
Bhattacharyya, Samrat. (2026). The upscaler.video Codec Support Dataset.