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About this tool
Build a pre-live checklist for scenes, audio, sources and alerts, with the bitrate and upload headroom your stream needs.
The OBS Scene Checklist Builder produces a pre-live checklist for an OBS-style setup — scenes, audio, sources, encoder, alerts and privacy — and sizes the stream at the same time. It applies each platform's published H.264 live-encoding range for your resolution and frame rate, adds the audio bitrate, and checks your measured upload against a 1.5x headroom margin so a stream does not start dropping frames ten minutes in. Sections adapt to what you actually run: guests, gameplay capture, music, alerts, chat overlay and local recording each add their own items.
Open OBS Scene Checklist Builder on AltFTool — it loads instantly in your browser.
Choose the Platform and Output resolution, then enter your Measured upload speed (Mbps) and Audio bitrate (kbps).
Tick what applies under What is in this stream? - gameplay capture, a second monitor, a capture card, guests, music, alerts, chat overlay or local recording.
Read Total ingest bitrate against the platform's range, the upload needed at a 1.5x margin and the 2-second keyframe interval, then work the checklist sections.
Uses each platform's published ranges instead of one number copied from a forum.
Checks upload against a 1.5x margin, which is what stops mid-stream frame drops.
Guests, music, alerts and capture cards add their own checks and nothing else.
For 1080p60, Twitch recommends up to 6000 kbps and YouTube publishes a 4500-9000 kbps range; for 720p30 both sit around 3000 kbps. Pick a number your upload can hold continuously rather than the highest you can briefly reach, because a stream that saturates the line drops frames.
About 1.5 times your total bitrate. A 6000 kbps video stream plus 160 kbps audio is 6160 kbps, so plan for roughly 9.2 Mbps of stable upload — and remember everything else in the house shares that pipe.
Two seconds. Both Twitch and YouTube specify a 2-second keyframe interval for H.264 ingest, and leaving it on 'auto' is one of the commonest reasons a stream fails to transcode into lower-quality options for viewers.
Dropped frames in the OBS stats dock almost always mean network congestion rather than raw speed: another device saturating the upload, Wi-Fi interference, or a bitrate set too close to your actual ceiling. Test on a wired connection at a lower bitrate first, then raise it until the drops start.