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High performance video with hardware decoding.

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Toggle the DevTools dock state with a keyboard shortcut.

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Some UI and feature enhancements to the Color Picker tool.

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Here is the Browser Video ScreenShot Maker. I have also added options to control the screenshot size and video playback rate which should help in capturing the video image at the right time. This can easily be done by rendering a video frame inside a CANVAS object, retrieving the pixels, and using the canvas.toDataURL() method and base64 encoding to convert CANVAS data into an inline image. Now, to make screenshots, we need add some code that will convert a given video frame into an image. Here is a demo that allows you to play local videos with your browser. I added some validation to make sure you only drop one file at a time and that the type of file is an actual video. But, we can make a Blob URL with URL.createObjectURL() method and use that as our video URL. Now, the HTML5 video tag expects a url to a file so passing the actual video data to the video tag does not work. Drag and drop is handled by window ondrop event while FileReader readAsArrayBuffer method reads the dropped file. This is actually pretty simple thanks to HTML5 FileReader. Doing that purely on the client side is not easy, but today I want to leverage HTML5 Video, FileReader, Blob Urls, and CANVAS to show how to load local video files (perhaps ones you already downloaded from YouTube with various other solutions), slow down the video playback, and convert those video frames into an actual image so that you can make video screenshots with your browser.

The YouTube post mostly talked about the problems of pulling videos from YouTube and saving the video data from CANVAS to an image.

The updated links skip this step and construct a blob Url right away, and as a result, stream the video so that it can be used right away and you can load large files.Ī while ago I have written about making screenshots with YouTube videos but today I want to approach this problem from another angle.

Below I talk about how FileReader is used to read the user selected video but reading an entire video into memory is a bad idea and will not work with large videos.

How to download html5 video blob gaia