title: Is there an ETag that can be sent on an `if-modified` header to see if a new video has been added to a channel or playlist?
body: <p>In the past, we've sent the channels ETag in the <code>if-modified</code> header to see if new videos have been added before trying to reprocess all the videos in the channel. However, because of an update, adding a new video is no longer considered modifying a channel and we get a <code>304 - Not Modified</code> even if new videos have been added. Is there another ETag I can use to see if a new video has been added? Any suggestions on the best way to see if new videos have been added to prevent us from over-processing the feed if nothing has been added would be greatly appreciated! Thanks in advance.</p>