How to livestream and clip it afterwards
Twitch deletes most streamers' past broadcasts after seven days and Facebook deletes live video after thirty. What you record locally, and how, decides what you can still post next week.
8 minute read
The clips are decided before you go live
Nothing you do after a broadcast can add what the recording did not capture. If your only copy is the platform's replay, you inherit its resolution, its bitrate, its single mixed audio track and its deletion clock, and every clip you make is downstream of those four things. Streaming and recording are two different jobs happening at the same moment, and the second one is the one that pays you next week. YouTube's own guidance on archiving live streams makes the point for them: it recommends keeping a local recording as a backup rather than trusting the automatic archive. So treat the live broadcast as the performance and the file on your own drive as the master. Everything below follows from that one decision.
Record locally, and treat the platform copy as the backup
In OBS, streaming and recording are separate outputs, so you can push a heavily compressed stream to the platform while writing a much better file to your own disk at the same time. Switch the output mode to Advanced and give the recording its own encoder settings instead of reusing the stream's. OBS recommends MKV as the container specifically because MKV will not corrupt the whole file if the recording stops without a graceful stop, which turns a crash three hours into a stream from a total loss into a missing tail. You can remux to MP4 afterwards from the File menu, or switch on automatic remuxing so it happens the moment you stop. Check free disk space before every broadcast; filling the drive mid-stream is the most common way people lose the master.
Split the audio while you still can
One mixed track is why a lot of good stream moments turn out to be unclippable. OBS records up to six audio tracks into a single file, and assigning your microphone, desktop audio, media playback and any remote guest to their own track costs one setup session and pays back on every edit afterwards. It matters most for music. Twitch runs past broadcasts through Audible Magic, which scans in thirty-minute blocks and mutes the entire block when it recognises a track, with the volume control disabled for that stretch. Twitch says live broadcasts are not scanned, so you only discover the problem when you go looking for the clip. With music on its own track in your local file, you export the speech and drop the music. Without it, that half hour is gone.
Mark the moment while you are still in it
You will not remember where anything happened. Leave a trail during the broadcast instead. On Twitch, typing a slash-marker command into your own chat drops a timestamped marker onto the VOD, and whatever you type after the command becomes the note attached to it, so "good tangent about pricing" is enough to find it again in the highlighter. Channel editors can add markers too, which is better than you doing it, because they are watching while you are performing. Failing all that, your chat log is a free marker file: skim it afterwards for the bursts of reactions and cut around them. Note that Twitch only accepts markers when past-broadcast storage is switched on, which is the same setting that decides whether the VOD exists at all.
How long you actually have
The deletion clock is real and it is different everywhere. Twitch Support states that past broadcasts are kept for sixty days on Prime, Turbo and Partner accounts, fourteen days for Affiliates and seven days for everyone else, and the storage toggle is off until you turn it on, so a stream you never enabled it for was never saved at all. Facebook changed its policy in February 2025 to delete live videos after thirty days, notifying people and giving them a ninety-day window to download or move older broadcasts. YouTube is the outlier: it archives streams under twelve hours automatically, but warns that anything longer may not be captured at all. On Instagram and TikTok the replay is a private, temporary copy for the creator rather than a public archive.
Design the stream so a clip can stand alone
Overlays that read perfectly live make no sense in a feed. A vertical crop takes the middle third of your canvas, which on a typical stream layout contains gameplay or a browser window, while your face sits in a corner and the chat box sits outside the crop entirely. The cheap fix is a second scene you can switch to: camera large and centred, minimal furniture, no alert box over your face, ready for the moments when you know you are about to say something worth keeping. Even if you never switch to it, keep the middle third clear of anything you would not want burned into a Reel. Alerts firing mid-sentence are the other reliable clip-killer, and most setups let you silence them per scene.
Turnaround, and what actually forces it
Advice about clipping fast usually appeals to algorithms. The honest reason to move is simpler and it is printed on the platforms' own pages: your source material expires. Stream to Twitch without a paid tier and the VOD you meant to clip from is gone inside a week. Stream to Facebook and it is gone inside a month. Keeping a local master removes that deadline entirely, which is the single strongest argument for doing it. Beyond the expiry, the case for a same-week turnaround is practical rather than algorithmic: you still remember what was good, your markers still make sense to you, and one broadcast feeds the following seven days of posting. That is a workflow argument, not a ranking claim, and be sceptical of guides that dress it up as one.
Make the extraction the cheap part
Everything above exists to get you to the edit with usable material: a clean local master, separated audio and a list of timestamps. What remains is repetitive rather than hard. Pull each marked moment, crop the wide canvas to 9:16 without losing your face, caption it because feeds play muted, export, repeat. That is the pass worth automating rather than the pass worth agonising over. FrameOS takes the long recording, surfaces candidate moments, reframes to vertical while following whoever is speaking, and adds word-by-word captions you can edit before export, so a three-hour stream becomes a reviewed batch of clips in one sitting. 300 credits for 3 days · no card. Whichever tool you use, the quality of what goes into it was settled before you hit Go Live.
FAQ
How long do Twitch VODs stay up?
Twitch Support states sixty days for Prime, Turbo and Partner accounts, fourteen days for Affiliates and seven days for everyone else. Storage is not on by default: if the "Store past broadcasts" toggle was off when you went live, nothing was saved and Twitch cannot recover it. Clips and highlights are not deleted on the same clock.
Does YouTube save my live stream automatically?
Usually. YouTube's help page says that if your stream is under twelve hours it can archive it for you automatically, and that a stream exceeding twelve hours might not be captured at all. YouTube itself recommends keeping a local recording as a backup. Auto-archiving can also be switched off in your channel's advanced settings, so check it before a stream you care about.
Should I record locally if the platform already saves the stream?
Yes. The local file is higher quality than the compressed broadcast, it can hold separate audio tracks for mic, desktop and music, it never expires, and it is immune to copyright muting on the platform copy. OBS lets you record and stream at once with different encoder settings, so the only real cost is disk space.
Why is part of my Twitch VOD muted?
Twitch scans past broadcasts with Audible Magic for music it recognises. It scans in thirty-minute blocks, and if it detects a flagged track anywhere in a block it mutes the whole block and disables the volume control for that stretch. Live broadcasts are not scanned, so you will not notice until afterwards. A local recording with music on its own track avoids the problem.
Sources
- Archive live streams · YouTube Help
- Twitch Support on VOD past broadcast storage limits by account type · Twitch Support
- Important: Changes To Audio In VODs · Twitch
- Multiple Audio Track Recording Guide · OBS Project
- Facebook now only stores live videos for 30 days, will delete old broadcasts · TechCrunch
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