FFmpeg is not defined

[Jveshi]

Describe the bug
FFmpeg is not defined

I used to use version 0.11.x, recently released 0.12.x, I need to make changes to the code.
I downloaded the required files into a local directory and referenced them.

<script type="text/javascript" src="https://www.xxx.com/source/reference/project/ffmpeg.wasm/ffmpeg/dist/umd/ffmpeg.js"></script> <script type="text/javascript" src="https://www.xxx.com/source/reference/project/ffmpeg.wasm/util/dist/umd/index.js"></script>

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But when I started using it, an error occurred, what should I do.

const ffmpeg = new FFmpeg();

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Try it on the official page, such as Playground, the result is the same.

Desktop:

• OS: window 10
• Browser: chrome

[rambo-panda]

window.FFmpegWASM.FFmpeg

[Jveshi]

window.FFmpegWASM.FFmpeg

I get it, I made a mistake according to the official docs.did not write this code

const { FFmpeg } = FFmpegWASM; const { fetchFile } = FFmpegUtil;

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But then encountered a new problem


But if change it to this, it will be fine.

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The new version seems to be slower. (maybe the code is still buggy with multithreading not enabled) What is your situation?
V0.12.2

V0.11.6

[jeromewu]

The core you use in v0.12.2 is single-thread, that's why it is slower. You can use core-mt instead.

More details: https://ffmpegwasm.netlify.app/docs/getting-started/usage#transcoding-video-multi-thread