HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
w3c
webcodecs
HTML2020–2025
w3c / webcodecs

webcodecs

WebCodecs is a flexible web API for encoding and decoding audio and video.

Web DevelopmentCreative & Media
Explore on GitHubRead Hacker News discussions
11Distinct people
15Mentions
0Explicit recommenders
1.3KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

WebCodecs is a flexible web API for encoding and decoding audio and video.

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 6:01:08 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year15 dated mentions

Observed mentions: 2020-01-04 03:40:26 UTC to 2025-12-25 17:15:04 UTC.

02462020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 5 mentions; 0 submissions, 5 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 6 mentions; 0 submissions, 6 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC505
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC211
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC000
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC606
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC101
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC101

What Hacker News says

1 sources
zenkyu·May 12, 2024
So basically webcodecs API is the best thing to happen in video processing, decoding and encoding are the most demanding parts of rendering, honestly there werent any good alternatives at all and If it wasnt for webcodecs api I wouldnt even bother trying to do it fully clientside, it would be slow and all, here is a bit about the alternatives: https://github.com/w3c/webcodecs/blob/main/explainer.md none of those alternatvies were specifically just for decoding and encoding, usually you had to work around it and get average results at best which I really wasnt satisfied with. When it comes to ffmpeg vs webcodecs API, honestly ffmpeg is slow as decoder and encoder I really dont recommend using it when theres webcodecs api, obviously depends what you are trying to do, but my god I dont remember exacly how fast it was but ive got like 10 fps
Read the rest
when decoding or something like that, you would be better off just playing the video and drawing it in real time
In Show HN: Open-Source Video Editor Web App

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.