Animated overlay for videos on iOS : <p>What's the common modern standard for animated video overlays? (e.g. if you want to add an animated logo to video recorded from the camera)</p>

<p>During research, I've found the following options:</p>

<ul>
<li><p>GIF - seems to be pretty outdated technology</p></li>
<li><p>FLV - supports alpha-channel, but no longer supported by Adobe.
Requires FFMPEG.</p></li>
<li><p>PNG sequence - the downside of this is having multiple files for each
frame.</p></li>
</ul>

<p>What's the right format/technology to use?</p>

<p>Ideally, what is natively supported on iOS (doesn't require FFMPEG)?</p>
