Using FFmpeg underneath the hood? about puppeteer-stream HOT 5 CLOSED

It works by making use of the tab recorder api of chrome which is accessible by this puppeteer-stream browser extension, which is loaded on launch.
When you want to record a webpage, puppeteer-stream notifies the extension to start recording (with the specified parameters). After that chrome starts capturing the audio and video of the page in a MediaStream, which is then converted into multiple packets using the MediaRecorder Api and transmitted back to puppeteer. You will then receive a webm stream that you can further process.
Puppeteer-stream doesn’t use ffmpeg under the hood, but the stream can be passed and converted to ffmpeg (if wanted).
Fun fact, you can even record DRM content using the tab recorder api.

Btw. puppeteer-stream is more lightweight than using a window+audio service to record puppeteer windows, however not as lightweight as the devtool startScreencast method, but this method can’t record audio.

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I would love to read the article when you published it 😄

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Ok awesome thank you so much for this! Appreciate you making this for others to use. Its super neat. Will include this in the article.

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Absolutely, just published it :):

https://medium.com/@toshvelaga/recording-webrtc-with-a-ghost-participant-using-puppeteer-104756e2be40

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Great to know its working, I had found that chrome tabCapture api can record audio & video both for the given tab.

I am stuck with drm videos in my use case, puppeteer-stream is not able to record that, it shows blank screen with no audio.

I know disabling chrome hardware acceleration seems to solve this issue, but that causes poor performance of my website.

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