ffmpeg.wasm
Ranked 5 of 5 media processing tools by recommenders
Recommended for running FFmpeg video processing in the browser without uploading files; caveat: slow and memory-hungry on long videos, with buggy multithreading.
Recommended for running FFmpeg video processing in the browser without uploading files; caveat: slow and memory-hungry on long videos, with buggy multithreading.
10 people gave an opinion
- recommend it
- 7
- criticize it
- 3
- approval share
- 70%
Recommended in 6 of 13 months
- November 2025: not recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: recommended
- April 2026: recommended
- May 2026: not recommended
- June 2026: recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 7 people recommend itNeeds 10 or more, not met.
- 2.3 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 6 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Works well in practice
“Ffmpeg.WASM is really good and might manage all these steps before even uploading.”
Comment from 14 Mar 2026 in “Offloading FFmpeg with Cloudflare” “I tested it. It worked. But it was vibe-coded AI.”
Comment from 6 Jun 2026 in “Zeroserve: A zero-config web server you can script with eBPF” “This is what I've been doing, it works great.”
Comment from 14 Mar 2026 in “Offloading FFmpeg with Cloudflare”
What people warn about
Each mark is one comment
Memory limits on long videos
“ffmpeg-on-wasm will hit a memory ceiling on longer videos”
Comment from 22 Apr 2026 in “Show HN: VidStudio, a browser based video editor that doesn't upload your files” “ffmpeg.wasm can get chunky with memory on anything over a few hundred MB.”
Comment from 2 Jun 2026 in “Show HN: Browser-based video trimmer powered by ffmpeg.wasm” “ffmpeg-wasm doesn't really cut it for long videos”
Comment from 22 Apr 2026 in “Show HN: VidStudio, a browser based video editor that doesn't upload your files” Buggy multithreaded build
“Working with the multithreaded build was challenging and buggy”
Comment from 10 Feb 2026 in “Ask HN: What Are You Working On? (February 2026)” “Wasm ffmpeg is much slower for sure and multithreading for wasm ffmpeg is buggy”
Comment from 22 Apr 2026 in “Show HN: VidStudio, a browser based video editor that doesn't upload your files” Slower than native FFmpeg
“Wasm ffmpeg is much slower for sure and multithreading for wasm ffmpeg is buggy”
Comment from 22 Apr 2026 in “Show HN: VidStudio, a browser based video editor that doesn't upload your files” “I wound up having to ditch ffmpeg wasm edition because of a lot of slowness”
Comment from 21 Apr 2026 in “Show HN: VidStudio, a browser based video editor that doesn't upload your files”
Other media processing tools people recommend
The four most recommended other media processing tools, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| FFmpeg | 232 | 94 | 71% | 12 | 15 yrs7 owners | Approved |
| Ez FFmpeg | 17 | 12 | 59% | 1 | — | — |
| GStreamer | 12 | 9 | 57% | 9 | — | — |
| FFmpeg WebCLI | 9 | 5 | 64% | 1 | — | — |
| ffmpeg.wasmThis page | 7 | 3 | 70% | 6 | — | — |
What people said
11 of the 12 comments that mention it, newest first. Each links to the original comment.
“I tested it. It worked. But it was vibe-coded AI.”
“ffmpeg.wasm can get chunky with memory on anything over a few hundred MB.”
“Wasm ffmpeg is much slower for sure and multithreading for wasm ffmpeg is buggy”
“a lot of effort for marginal gains imo”
“ffmpeg-wasm doesn't really cut it for long videos”
“ffmpeg-on-wasm will hit a memory ceiling on longer videos”
“I wound up having to ditch ffmpeg wasm edition because of a lot of slowness”
“This is what I've been doing, it works great.”
“Ffmpeg.WASM is really good and might manage all these steps before even uploading.”
“Working with the multithreaded build was challenging and buggy”
“It's open source and actively maintained.”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.