twitch

 A channel trailer is intended to be embedded on your Twitch channel page. The idea of these videos are to give newcomers visiting your channel a flavour of your content and what to expect from you and your livestreams. These videos are limited to 1 minute in length as per Twitch guidelines.  

Raid trailers are for when you channel is raided by another streamer. If somebody brings their community to yours, you can show them what your channel and community is all about.

These videos are often longer than a minute, but best to be kept brief enough for you to quickly switch to before continuing with your stream.

Introduction videos are typically made to be played at the beginning of the stream. These videos are typically a little longer than 1 minute in length and showcase a what the streamer's content is about, what newcomers should expect and to get viewers ready and in the right mood for the forthcoming livestream.