ByteArrays are very useful. I use them when saving image data out in the form of jpgs or pngs. You can also use them with sound data.
However someone recently asked me what about video? Can we use them to hold video data?
Well, pre-flash player 10.1 the answer is no. But now with flash player 10.1 you can use ByteArrays and videos with Actionscript 3. The methods concerned are…
appendBytes()
appendBytesAction()
…running off the NetStream class.
I have not used them myself yet but it looks like to you may be able to now create, edit, and send your own video data (flvs only at this point from what I can make out). Something I will definitely keep an eye out for in the future.
