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It is no problem to upload a video up to 5MB in size to assets and play it from there.
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It is no problem to import a video up to 27MB via 7-Zip / WinRAR into the assets (of an aia, 30MB limit), then import this aia into AI2 and then play the video there (Companion & APK).
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There is no problem to import a video up to 97MB (for an APK) and 147MB (for an AAB, Play Store limits) into the assets and then play it with the compiled app after recompiling/signing. (See here: How to build a big app → APK max. 100 MB or → AAB 150 MB)
I've already pointed this out a number of times over the past few years.