The fastest pass is the one that starts from marks something already left behind. Chat timestamps, hotkey markers you hit live, alert events, the transcript: any of these turns six hours into roughly twenty places to look, and checking twenty places takes about twenty minutes. If nothing was marked, transcript search is the best fallback you have, and it beats scrubbing by a wide margin. Scrubbing the whole recording is the slow answer, and it's the one most people default to.
Start with what the stream recorded about itself
A live stream produces more metadata than a normal shoot, and most of it gets thrown away. Chat log with timestamps: message rate per minute is a decent proxy for something happening, and the spikes are free to compute. Alerts and donations are timestamped. Scene switches in your streaming software are logged. If you streamed to a platform, the VOD may already have chapter markers or a most-replayed graph.
Pull whatever exists into one sorted list of timestamps before you open the video. Twenty minutes of assembling that list saves several hours of watching, and it's the single highest-return step in this whole process.
If nothing was marked
Two passes, in this order.
Transcript first. Get a timecoded transcript of the full six hours, then search it for the topics you know you covered and for the way you actually said them. Speech doesn't match the words you'd use to describe it later, so search phrases people say out loud rather than the label you'd give the segment.
Waveform second. Open the recording, look at the audio, and go to the loud parts and the dead parts. Loud usually means reaction. Long silence usually means something broke or something landed. Playback at three times speed with the waveform visible covers six hours in under an hour if you're only confirming.
The automatic clippers
There's a whole class of tools that ingests a VOD and returns short clips. They cluster around engagement signals and speech energy, and they're genuinely good at reaction-heavy streams headed for short form. They're weakest exactly where a lot of value sits: a calm explanation, a question answered well, the moment a guest says the thing you wanted them to say. They also return more candidates than you asked for, and reviewing candidates is its own hour.
Making the next stream cheaper
The fastest way to find highlights in your next six-hour stream is a hotkey. Bind a marker key, hit it whenever something happens, and accept that you'll miss some. Or keep a note open and type the clock time with three words. This is not a tool recommendation and it's the biggest single improvement available to anyone streaming weekly.
Searching the archive instead of the file
Once you have a year of these, the problem changes shape. You're no longer finding a moment in one recording, you're finding which of fifty recordings it's in. Ctrl-F across fifty transcript files works until it doesn't, and the DIY answer is a transcription job plus a search index plus a script mapping hits back to timecodes, which is a small system somebody has to maintain forever.
The retrieval layer category exists for this: index the footage by content once, then query the whole library by what happens rather than by filename. Vivu takes the shape that fits a recurring stream, since it connects to the storage your recordings already land in and each new one joins the searchable set on its own, so last night's stream and last spring's answer the same query. It won't make six hours faster to watch. It changes "the part where I explained the pricing thing" from a memory test into one search.
When you don't need any of this
If you stream occasionally and clip within a day or two, you remember where things are and nothing will beat that. If your stream follows a rundown with segment times, you already have your markers. And if you only ever need clips from the last stream, the marker hotkey solves the whole problem for free.
Which one is your situation
The honest split is between one recording and an archive. For one six-hour file, the answer is mechanical: gather existing timestamps, search the transcript, scrub the gaps, and you're done in an afternoon. For a growing library where you'll be asked next quarter about something you said in April, that same routine doesn't compound, and you'll spend the afternoon again every time. Notice which of the two you keep repeating. That's the thing worth fixing.