That the FFmpeg JS can actually read an image blob so we can build the video slideshow.I will note I am also making a few big assumption here: The browser memory footprint is bound to be quite large! Well, the FFmpeg JS file is kind of large weighing in at ~6MB gzipped (or ~24 MB uncompressed). Well, before today I would have thought the same thing until I found videoconverter.js which apparently is a working copy of FFmpeg in JavaScript! What's the catch? I know what you might be thinking, how is FFmpeg going to help me, that isn't JavaScript. There are really two options for this, either build your own encoder or hope that someone has built some sort of encoder already.Īn awesome answer on GameDev (and later found something similar on StackOverflow) explains that FFmpeg can create a video slideshow from images.įor those who don't know, FFmpeg is a free software project that produces libraries and programs for handling multimedia data
I mentioned that you are basically having a video encoder. In your circumstance, the animation duration is short enough that I do not believe that memory will be an issue (at least in terms of storing the images and video). How the browser will handle the amount of memory required to do encoding?.Is there a limit on Blob size? According to the W3C Blob spec, there doesn't seem to be.I had a few concerns first whether it was possible to actually do this, mainly: So basically you are looking at having more-or-less a video encoder in-browser which can take the images you get form the canvas and convert it to video. In theory, yes it is possible but not easy or practical. Disclaimer: I haven't done this myself so all the information I am providing is only what I have found by researching
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