ffmpegwasm/ffmpeg.wasm

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FFmpeg for browser, powered by WebAssembly

Stars: 17.8k
Forks: 1.1k
Open beginner issues: 0
Indexed issues: 388

Dominant language: C
License: MIT
Last GitHub push: Sep 17, 2025
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

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388 issues indexed so far

Build my own FFmpeg failure Open

ffmpegwasm/ffmpeg.wasm#272 · 3 comments · 5 reactions · 0 assignees · Indexed Sep 15, 2026
Catch FFMPEG errors Open

ffmpegwasm/ffmpeg.wasm#273 · 1 comment · 4 reactions · 0 assignees · Indexed Sep 15, 2026
How do I return/retrieve data such as supported fomats? Open

ffmpegwasm/ffmpeg.wasm#277 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
the log flag or setLogging doesn't seem to work ? Open

ffmpegwasm/ffmpeg.wasm#278 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to use ffmpeg.wasm to display a video into canvas，by decode frame with ffmpeg Open

ffmpegwasm/ffmpeg.wasm#280 · 3 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Oops, something went wrong in FS operation. Open

ffmpegwasm/ffmpeg.wasm#281 · 6 comments · 10 reactions · 0 assignees · Indexed Sep 15, 2026
Ask for assistance regarding single-threaded issues Open

ffmpegwasm/ffmpeg.wasm#282 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ffmpeg.wasm is not "technically" production ready! Open

ffmpegwasm/ffmpeg.wasm#285 · 15 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Build ffmpeg.wasm-core falied Open

ffmpegwasm/ffmpeg.wasm#286 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to output/pipe information from silencedetect filter Open

ffmpegwasm/ffmpeg.wasm#287 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
initial memory too small Open

ffmpegwasm/ffmpeg.wasm#289 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ffmpeg crash when using -v:q with jpg Open

ffmpegwasm/ffmpeg.wasm#292 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to enable HTTPS protocol in ffmpeg.wasm? Open

ffmpegwasm/ffmpeg.wasm#295 · 12 comments · 11 reactions · 0 assignees · Indexed Sep 15, 2026
Can't be used within browser manifest v3 service workers Open

ffmpegwasm/ffmpeg.wasm#297 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
How to get images for each frame of a video, without file writing operations Open

ffmpegwasm/ffmpeg.wasm#298 · 2 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
Connection refused Open

ffmpegwasm/ffmpeg.wasm#304 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unable to upload video to Instagram after convesion Open

ffmpegwasm/ffmpeg.wasm#313 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
RuntimeError: abort(LinkError: WebAssembly.instantiate(): Import #258 module="a" function="Rd" error: function import requires a callable) Open

ffmpegwasm/ffmpeg.wasm#314 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Readme install instructions out of date, no longer need node --experimental-wasm-threads --experimental-wasm-bulk-memory transcode.js as of Node 12.x Open

ffmpegwasm/ffmpeg.wasm#315 · 2 comments · 11 reactions · 0 assignees · Indexed Sep 15, 2026
wasm-ld: error: initial memory too small Open

ffmpegwasm/ffmpeg.wasm#317 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Process is not defined Open

ffmpegwasm/ffmpeg.wasm#321 · 2 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
How to get duration of uploaded video in React? Open

ffmpegwasm/ffmpeg.wasm#322 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Speed? Open

ffmpegwasm/ffmpeg.wasm#326 · 2 comments · 9 reactions · 0 assignees · Indexed Sep 15, 2026
Can't reuse ffmpeg Open

ffmpegwasm/ffmpeg.wasm#330 · 7 comments · 4 reactions · 0 assignees · Indexed Sep 15, 2026
How to combine audio rtsp stream and video rtsp stream? Open

ffmpegwasm/ffmpeg.wasm#332 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Framehash muxer printing FFMPEG_END on the same line of the final output causing ffmpeg.run not resolving Open

ffmpegwasm/ffmpeg.wasm#334 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Running single threaded FFMPEG in a web worker Open

ffmpegwasm/ffmpeg.wasm#337 · 22 comments · 6 reactions · 0 assignees · Indexed Sep 15, 2026
Electron Node Error: Cannot find module '@ffmpeg/core' Open

ffmpegwasm/ffmpeg.wasm#338 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Uncaught RuntimeError: abort(OOM) Open

ffmpegwasm/ffmpeg.wasm#339 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
I can't run ffmpeg on my machine, rangeerror webassembly memory could not allocate memory Open

ffmpegwasm/ffmpeg.wasm#344 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Add rubberband Open

ffmpegwasm/ffmpeg.wasm#349 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Pass in base64 encoded images as input (invalid PNG signature error) Open

ffmpegwasm/ffmpeg.wasm#350 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Is this package still maintained? Open

ffmpegwasm/ffmpeg.wasm#351 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Hi, Open

ffmpegwasm/ffmpeg.wasm#354 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
cant make build if i import this library in vuejs project Open

ffmpegwasm/ffmpeg.wasm#355 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Store WASM file in localStorage Open

ffmpegwasm/ffmpeg.wasm#358 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unable to process RAW .MOV file created from iPhoneX. pthread error thrown Open

ffmpegwasm/ffmpeg.wasm#359 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
File Not Converting in Production Open

ffmpegwasm/ffmpeg.wasm#361 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Just a few small questions Open

ffmpegwasm/ffmpeg.wasm#364 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
High ram usage , how to lower it Open

ffmpegwasm/ffmpeg.wasm#365 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Can we specify threads or workers to be used ? Open

ffmpegwasm/ffmpeg.wasm#366 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
how should i generate gif with transparent background Open

ffmpegwasm/ffmpeg.wasm#367 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
timecode option for drawtext not working as expected. Open

ffmpegwasm/ffmpeg.wasm#370 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to obtain audio and video information, such as duration, width and height Open

ffmpegwasm/ffmpeg.wasm#371 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to use xFade? Open

ffmpegwasm/ffmpeg.wasm#372 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Is there single threaded FFMPEG with WebWorkers (the same as current one, but without SharedArrayBuffer)? Open

ffmpegwasm/ffmpeg.wasm#373 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
The encoding and decoding speed is too slow. Can you optimize it Open

ffmpegwasm/ffmpeg.wasm#376 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cant get output files when running on web worker Open

ffmpegwasm/ffmpeg.wasm#379 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Compressing audio files is very slow Open

ffmpegwasm/ffmpeg.wasm#380 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Ffmpeg trying to load js core file as wasm core: expected magic word Open

ffmpegwasm/ffmpeg.wasm#382 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026

ffmpegwasm/ffmpeg.wasm

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