How to turn your Twitch streams into TikToks and Shorts

A stream is long, and what's worth showing a stranger is usually a few seconds of it: the clutch, the scream, the line chat spammed for a minute. Those seconds sit inside a VOD, the recording Twitch keeps of a past broadcast, and a viewer who missed the stream rarely has hours to scrub through it.

Meanwhile the people who'd like you most are scrolling TikTok, YouTube Shorts and Instagram Reels on a phone held upright. They'll give you a few seconds, not an evening, and only if those seconds fill their screen.

Being found on Twitch mostly happens while you're live, in a category's browse list. A clip works the other way round: it travels while you're offline, to people who've never typed your name, and the link in your profile brings the curious ones back to your channel.

There's also a clock. Twitch keeps a past broadcast for a limited time: seven days on a channel that isn't Affiliate or Partner yet, longer once it is, up to 60 days for most Partners. And it only keeps one at all if Store past broadcasts is switched on in your VOD settings.

Highlights, the parts of a broadcast you save on Twitch, stay longer, but they share a 100-hour storage limit with your uploads. So the habit that works is the same either way: pick your moments in the days after the stream, while the VOD is still there and you still remember where they were.

Your stream is 16:9, wider than it is tall. Short-video feeds are built the other way: YouTube treats a video as a Short when it's square or vertical and up to 3 minutes long, and Instagram takes Reels from 1.91:1 to 9:16, with full-screen vertical as the shape that fills a phone.

Fitting one into the other leaves three choices. Crop to the middle and the game fills the screen, but your camera, usually in a corner, falls off the edge. Shrink the whole stream to fit and everything is there, but in a band across the middle, small enough that text and the action are hard to make out on a phone.

The third is what most streamer clips do: cut the stream into two zones and stack them, your camera on top and the game underneath at full width. The viewer sees your face and what made you react, both big enough to read.

The split isn't always right. A moment that's all reaction can be camera only, and a game whose action sits in the middle, like a shooter's crosshair, survives a plain crop. Choose per clip, not once for the channel.

Mark them while you're live. A stream marker, added by typing /marker in chat or from Stream Manager, drops a note on the broadcast's timeline at that second, so afterwards you jump to the moment instead of scrubbing for it.

A good moment is one idea a stranger understands without context: a play, a reaction, a line. Start the clip on the action, not on the build-up, because in a feed you only get as long as it takes to scroll past.

Several short moments from one stream can make one clip, a best-of of the night, as long as they share a thread: three fails in a row, the same joke landing twice. Unrelated moments glued together read as random.

Keep it short enough to watch twice. Shorts can run to 3 minutes, but length isn't the goal: end on the payoff, not a minute after it.

Text where the app covers it. TikTok, Shorts and Reels lay their own buttons, your name and the caption over the edges of the video, so a title placed at the very bottom ends up behind them. Check the clip the way it will be seen before posting it.

No words on screen. A clip that only makes sense with the sound on loses whoever scrolls with it off. Put what's said, or what's happening, in a line of text.

A camera cropped in half, or a game zone so tight the action leaves it. Frame the camera zone around your face with some room, and the game zone around where things happen rather than the whole interface.

Posting the whole fight. A minute of build-up and five seconds of payoff is a clip about the build-up. Cut to the moment and let the viewer catch up.

Without a tool made for it, one clip means downloading the VOD from Twitch, opening it in a desktop video editor, setting up a tall canvas, placing the video twice, cropping one copy down to your camera and the other to the game, lining them up, writing the text, then exporting and checking it on a phone.

None of it is hard, and all of it starts again for the next clip, which is usually where the habit of posting after every stream stops.

Open the Studio and go to Replays: your past broadcasts are there, fetched from Twitch, so there's nothing to download. Open one, then drag across the video to pick a moment, or press Find the best moments and the AI hands you the ones worth posting. Analysing a replay costs 10 AI credits per hour of video, and searching the same replay again 3 AI credits per hour.

Tick the moments to keep and press Start editing: they're joined into one clip that opens in the editor. Got a video on your computer instead? Import it in the Edits tab and it opens there too.

In Zones, pick Cam + game, then frame zone 1 on your camera and zone 2 on the game. The clip beside the stream shows exactly what each zone holds, as in the editor below, running on a sample stream: the second zone slides onto the game and the clip follows it.

Then dress it up: a text style for your captions or a title, effects and transitions between moments, sounds, and your companion. Phone view shows the clip the way TikTok, Shorts or Reels will, with the areas their buttons cover.

Export an MP4, vertical 9:16 or landscape 16:9. It's made on your computer, in the browser, so there's no queue to wait in; export from Chrome or Edge to keep the sound in the file. On the free plan the clip carries a small Edited with Magic Mate mark, and saved edits are kept 3 days after their last save, so export the ones you want to keep for good.