Issues

• core-mt: RuntimeError: Aborted(OOM) decoding a single 4K (2160x3840) H.264 frame, even before any filter runs

  ffmpegwasm/ffmpeg.wasm#946 · Filter by author mcfredrick opened on Sep 9, 2026

• Is this project maintained?

  ffmpegwasm/ffmpeg.wasm#939 · Filter by author imkonsowa opened on Apr 10, 2026
  5

• [Guide/Feature] Fully working MV3 Chrome Extension implementation (Bypassing Worker CSP, Blob issues & exit(0) crash)

  ffmpegwasm/ffmpeg.wasm#934 · Filter by author CNCmaisdeMILL opened on Mar 17, 2026
  1

• Build support for 4GB file size handling?

  ffmpegwasm/ffmpeg.wasm#931 · Filter by author noobSam1122 opened on Feb 20, 2026

• update to FFmpeg 6.0

  ffmpegwasm/ffmpeg.wasm#930 · Filter by author fanyj opened on Feb 11, 2026
  1

• switch from ST to MT

  ffmpegwasm/ffmpeg.wasm#911 · Filter by author drzraf opened on Nov 3, 2025

• FFmpeg UMD not loading in browser — exports is not defined and FFmpeg stays undefined (photo compression works, video fails)

  ffmpegwasm/ffmpeg.wasm#909 · Filter by author steventauriello opened on Oct 22, 2025
  1

• on event

  ffmpegwasm/ffmpeg.wasm#907 · Filter by author xieanwen opened on Oct 14, 2025

• ffmpeg.wasm and possible license problem

  ffmpegwasm/ffmpeg.wasm#902 · Filter by author ali4864 opened on Sep 19, 2025
  5

• ffmpeg.exec(['-i', 'input.mp4', 'output.mp3']) Aborted

  ffmpegwasm/ffmpeg.wasm#899 · Filter by author Joburgess opened on Sep 4, 2025
  1

• libx265 no use

  ffmpegwasm/ffmpeg.wasm#898 · Filter by author wangfei1233 opened on Sep 4, 2025
  2

• [Question]: Possible consideration for NodeJS support again due to alternatives going away?

  ffmpegwasm/ffmpeg.wasm#897 · Filter by author jonbarrow opened on Aug 31, 2025
  2

• Video stream?

  ffmpegwasm/ffmpeg.wasm#894 · Filter by author kogratte opened on Aug 27, 2025

• filter_complex with Multithreading hangs

  bug
  ffmpegwasm/ffmpeg.wasm#883 · Filter by author ronlv10 opened on Aug 11, 2025
  1

• Is there a progressive encoding mode?

  ffmpegwasm/ffmpeg.wasm#882 · Filter by author sleep9 opened on Jul 17, 2025

• UMD builds are bugged: workers are loaded in "module" mode, but webpack worker builds dont work with that

  ffmpegwasm/ffmpeg.wasm#881 · Filter by author machineonamission opened on Jul 10, 2025

• Can ffmpeg.wasm support gltransition or custom GLSL transitions in the future?

  ffmpegwasm/ffmpeg.wasm#879 · Filter by author khalifmv opened on Jun 25, 2025

• All logs have stderr, even there are no errors

  ffmpegwasm/ffmpeg.wasm#877 · Filter by author mvynhb opened on Jun 19, 2025

• 4GB memory support for large files

  ffmpegwasm/ffmpeg.wasm#876 · Filter by author 825i opened on Jun 16, 2025
  1

• Ffmpeg on NextJS do not work!?

  ffmpegwasm/ffmpeg.wasm#875 · Filter by author R4Ajeti opened on Jun 9, 2025

• Why did multithreading stop at this point? The example on the official website is the same. I remember this feature was still working well yesterday

  ffmpegwasm/ffmpeg.wasm#873 · Filter by author qq1825566078 opened on May 20, 2025

• "This page crashed. can't convert Object to string" in playground

  ffmpegwasm/ffmpeg.wasm#872 · Filter by author peterjin-org opened on May 19, 2025

• each exec() takes more and more time (mt-core)

  ffmpegwasm/ffmpeg.wasm#870 · Filter by author ofirgaash1 opened on May 3, 2025
  1

• Offer mutliple wasm builds depending on media content

  ffmpegwasm/ffmpeg.wasm#869 · Filter by author KingSora opened on Apr 23, 2025
  1

• react-vite-app doesn't work with current URL that uses version 0.12.10

  ffmpegwasm/ffmpeg.wasm#868 · Filter by author donaldchen opened on Apr 21, 2025
  4