Release 2026-10-01: 7.66M sessions, Parquet

README.md

@@ -10,64 +10,146 @@ tags:
 - browser-support
 - av1
 - h265
+- hevc
+- vp9
+- h264
 pretty_name: WebCodecs Codec Support Dataset
 size_categories:
-- 100M<n<1B
+- 1B<n<10B
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/*.parquet
 ---
 
-# The upscaler.video Codec Support Dataset
+# The Codec Support Dataset
+
+**Version 2026-10-01**
 
 ## 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](https://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
+This dataset contains real-world audio and video codec support data passively collected from **7,655,853 unique user sessions** at [free.upscaler.video](https://free.upscaler.video), an open-source browser-based video upscaler with ~700,000 monthly active users. Each session uses the WebCodecs API (`VideoEncoder.isConfigSupported()` / `VideoDecoder.isConfigSupported()` and their audio equivalents) to test encoding and decoding support for a random sample of ~300 out of 1,087 codec strings across the major codec families (H.264, H.265, VP8, VP9, AV1, AAC, Opus, etc.).
+
+* **Total Tests:** 2,434,549,264
+* **Sessions:** 7,655,853
 * **Unique Codecs:** 1,087
-* **Collection Period:** January 2026 - March 2026
-* **Primary Origin:** [10.5281/zenodo.19187467](https://doi.org/10.5281/zenodo.19187467)
+* **Collection Period:** January 2, 2026 – October 1, 2026
+* **Format:** Parquet (zstd), one file per month, 3.85 GB total
+* **DOI (all versions):** [10.5281/zenodo.19187466](https://doi.org/10.5281/zenodo.19187466)
+
+The data is summarized interactively at [webcodecsfundamentals.org](https://webcodecsfundamentals.org/datasets/codec-support/), with a per-codec [support table](https://webcodecsfundamentals.org/datasets/codec-support-table/) and an [analysis of AV1, HEVC, VP9 and H.264 support](https://webcodecsfundamentals.org/datasets/codec-analysis-2026/).
 
-The data is compiled and interactively summarized on the project website, [webcodecsfundamentals.org](https://webcodecsfundamentals.org/datasets/codec-support/), which provides a global overview of real-world hardware acceleration across operating systems and browsers.
+## Files
+
+| File | Days | Rows |
+|------|------|------|
+| `data/codec-support-2026-01.parquet` | 30 | 138,596,578 |
+| `data/codec-support-2026-02.parquet` | 27 | 81,443,298 |
+| `data/codec-support-2026-03.parquet` | 31 | 201,598,644 |
+| `data/codec-support-2026-04.parquet` | 30 | 197,135,832 |
+| `data/codec-support-2026-05.parquet` | 31 | 236,605,038 |
+| `data/codec-support-2026-06.parquet` | 30 | 281,177,508 |
+| `data/codec-support-2026-07.parquet` | 31 | 343,646,700 |
+| `data/codec-support-2026-08.parquet` | 31 | 454,035,630 |
+| `data/codec-support-2026-09.parquet` | 30 | 484,965,900 |
+| `data/codec-support-2026-10.parquet` | 1 | 15,344,136 |
+
+`SHA256SUMS` contains checksums for every file.
 
 ## 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`)
+One row per codec test (one codec string tested in one session). Rows from the same session are contiguous.
+
+| Column | Type | Description |
+|--------|------|-------------|
+| `session_id` | string | Unique ID of the test session |
+| `timestamp` | timestamp (ms, UTC) | When the session's tests were run |
+| `user_agent` | string | Full browser user agent string |
+| `browser` | string | Browser family (Chrome, Safari, Edge, Firefox, Unknown) |
+| `platform_raw` | string | Raw `navigator.platform` value |
+| `platform` | string | Normalized platform (Windows, macOS, iOS, Android, Linux, Other) |
+| `codec` | string | WebCodecs codec string tested (e.g. `av01.0.16M.08`) |
+| `encoder_supported` | bool | Whether the encoder supports this codec |
+| `decoder_supported` | bool, nullable | Whether the decoder supports this codec; null if not tested |
 
-*Note: `decoder_supported` is empty for sessions before Jan 14, 2026. Encoder data covers all 1.14M sessions.*
+`decoder_supported` is null for sessions before January 14, 2026, when decoder testing was added (98% of sessions include decoder data). `browser` is reported by the client; all Chromium-based browsers other than Edge (Brave, Opera, Samsung Internet, etc.) are grouped as Chrome.
 
 ### Platform Normalization
-The `platform` column applies the following normalization to the raw `navigator.platform` value:
-* Win32, Win64 ➔ **Windows**
-* MacIntel ➔ **macOS**
+
+* Win32, Win64, WIN32 ➔ **Windows**
+* MacIntel, MacOS, Mac OS ➔ **macOS**
 * iPhone, iPad ➔ **iOS**
-* Linux armv8*, Android* ➔ **Android**
-* Linux x86_64, Linux aarch64 ➔ **Linux**
+* Linux armv7l, Linux armv8l, Linux armv81, Linux armv6l, Linux arm, Android, Android64 ➔ **Android**
+* Linux, Linux x86_64, Linux aarch64, Linux amd64, Linux i686 ➔ **Linux**
+* Anything else (e.g. HarmonyOS, blank, spoofed values) ➔ **Other** (18 sessions)
+
+## Usage
+
+At 2.4 billion rows the dataset is too large to load into pandas; query the files in place with [DuckDB](https://duckdb.org/), Polars or Spark:
+
+```python
+import duckdb
+
+con = duckdb.connect()
+con.sql("CREATE VIEW tests AS SELECT * FROM read_parquet('data/*.parquet')")
+
+# Encoder and decoder support by codec
+con.sql("""
+    SELECT codec,
+           round(100 * avg(encoder_supported::INT), 2) AS encoder_pct,
+           round(100 * avg(decoder_supported::INT), 2) AS decoder_pct,
+           count(*) AS tests
+    FROM tests
+    GROUP BY codec
+    ORDER BY encoder_pct DESC
+""").show()
+```
+
+With Hugging Face `datasets`, use streaming rather than downloading everything up front:
+
+```python
+from datasets import load_dataset
+
+ds = load_dataset("katana-video/webcodecs-codec-support", split="train", streaming=True)
+```
 
 ## Dataset Creation & Methodology
-Data was collected via client-side telemetry on the rendering engine at [free.upscaler.video](https://free.upscaler.video). A full breakdown of the collection methodology can be found [here](https://free.upscaler.video/research/methodology/).
+
+Data is collected anonymously in the background on [free.upscaler.video](https://free.upscaler.video). No personally identifiable information is collected: only the user agent, `navigator.platform`, and codec test results. A full description of the collection methodology is [here](https://free.upscaler.video/research/methodology/).
+
+### Known Limitations
+
+* **Sessions, not devices.** Percentages are per session and reflect free.upscaler.video's traffic mix (77% Chrome, 50% Windows, 30% Android). Reweight by your own traffic for other applications.
+* **WebCodecs API support, not hardware support.** A codec the device supports may be missing from the WebCodecs API (e.g. Firefox on Android does not expose WebCodecs), so the numbers are conservative.
+* **`isConfigSupported()` only.** Results do not measure encode/decode performance or quality.
+* **Collection gap.** Very few sessions were recorded between February 8 and February 20, 2026 (none on February 19) due to a collection outage.
+
+### Changes from Version 2026-03-22
+
+* 7,655,853 sessions (was 1,142,586), collection period extended to October 1, 2026
+* Parquet instead of CSV (3.85 GB instead of 69.4 GB uncompressed)
+* New `session_id` column
+* Platform normalization extended to rare `navigator.platform` values, with an `Other` bucket
 
 * **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):**
 ```bibtex
-@dataset{upscaler_dataset_2026,
+@dataset{upscaler_codec_dataset_2026,
+  title        = {The Codec Support Dataset},
   author       = {Bhattacharyya, Samrat},
-  title        = {Real-World WebCodecs and AV1 Hardware Support Dataset},
-  month        = mar,
-  year         = 2026,
+  year         = {2026},
+  version      = {2026-10-01},
   publisher    = {Zenodo},
-  doi          = {10.5281/zenodo.19187467},
-  url          = {[https://doi.org/10.5281/zenodo.19187467](https://doi.org/10.5281/zenodo.19187467)}
-}
+  doi          = {10.5281/zenodo.19187466},
+  url          = {https://doi.org/10.5281/zenodo.19187466},
+  note         = {2.43B codec tests from 7.66M sessions}
+}
+```
+
+## License
+
+[Creative Commons Attribution 4.0 International (CC-BY 4.0)](https://creativecommons.org/licenses/by/4.0/). Credit "The Codec Support Dataset" with a link to [webcodecsfundamentals.org/datasets/codec-support](https://webcodecsfundamentals.org/datasets/codec-support/).

SHA256SUMS

@@ -0,0 +1,10 @@
+c19b80a3c3b0440d105d8f456917bb070a0e8bffc14c26bc6eb0259abc8c2a4b  data/codec-support-2026-01.parquet
+729ea419d7b9b48ba5bac8a3c1e7d580dc311529ade590e229cdfb43e09e7212  data/codec-support-2026-02.parquet
+90fef550c9543c842f80273ac1f207e27ebed9fbd70c59fc646f75814b81ca21  data/codec-support-2026-03.parquet
+19376fe7c221a900421cc3d5ccbb44ef3d0d5ed1b4ba9805f497bc7cc2b403c8  data/codec-support-2026-04.parquet
+3c304cd073b787424c6dd79322a01613e3138c53bfbab3dead5ee006e748ef50  data/codec-support-2026-05.parquet
+b27ed3b422ee3d3a0152b98b717f6265d37e27e317e9c34903b46e02a7d604a7  data/codec-support-2026-06.parquet
+1a2c76079fc3dba35af3ac667e36ad4ab8dc5dc346dde6aa609190ad62c4cb6c  data/codec-support-2026-07.parquet
+f093119bcbf8fd31c2592342eb6813ab95d39bd0273f5331f0f973a2e42f34d7  data/codec-support-2026-08.parquet
+3fbdb75906f3f8767177c967864e7103cbc825e589a98c1ea68d51f015fb4df0  data/codec-support-2026-09.parquet
+2a8414bcf49bd760b233feab1f42209f6f18d53a67abd07a132f7cad0eb0587d  data/codec-support-2026-10.parquet

data/codec-support-2026-01.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c19b80a3c3b0440d105d8f456917bb070a0e8bffc14c26bc6eb0259abc8c2a4b
+size 217215451

data/codec-support-2026-02.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:729ea419d7b9b48ba5bac8a3c1e7d580dc311529ade590e229cdfb43e09e7212
+size 128717035

data/codec-support-2026-03.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:90fef550c9543c842f80273ac1f207e27ebed9fbd70c59fc646f75814b81ca21
+size 318208633

data/codec-support-2026-04.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:19376fe7c221a900421cc3d5ccbb44ef3d0d5ed1b4ba9805f497bc7cc2b403c8
+size 311311980

data/codec-support-2026-05.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3c304cd073b787424c6dd79322a01613e3138c53bfbab3dead5ee006e748ef50
+size 374063236

data/codec-support-2026-06.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b27ed3b422ee3d3a0152b98b717f6265d37e27e317e9c34903b46e02a7d604a7
+size 444385565

data/codec-support-2026-07.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1a2c76079fc3dba35af3ac667e36ad4ab8dc5dc346dde6aa609190ad62c4cb6c
+size 543574710

data/codec-support-2026-08.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f093119bcbf8fd31c2592342eb6813ab95d39bd0273f5331f0f973a2e42f34d7
+size 718289885

data/codec-support-2026-09.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3fbdb75906f3f8767177c967864e7103cbc825e589a98c1ea68d51f015fb4df0
+size 766344390

data/codec-support-2026-10.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2a8414bcf49bd760b233feab1f42209f6f18d53a67abd07a132f7cad0eb0587d
+size 24245187