YouTube encoder settings for a 24/7 loop
Updated 26 Oct 2026 · 6 min read
YouTube publishes recommended settings rather than hard requirements, which makes it more forgiving than Steam - but a stream that runs for weeks is judged on stability, not peak quality. Here is what to target and why.
The numbers
Resolution: 1920×1080 at 30fps covers almost every case. 60fps raises YouTube’s H.264 recommendation from 14 to 17 Mbps, for footage that is usually not fast enough to justify it.
Bitrate: for 1080p30 in H.264, YouTube lists a 5 Mbps minimum and recommends 14 Mbps (4 and 10 Mbps for AV1 or H.265). Loopcast sends 6,000 kbps CBR: above the minimum, below YouTube’s recommendation.
Keyframe interval: 2 seconds. YouTube requires 4 seconds or less and recommends 2; every viewer joining mid-loop waits for the next keyframe before they see anything.
Codec: H.264 video, AAC audio at 128 kbps stereo, which is the audio bitrate YouTube recommends.
Why we stay below the recommendation
A twenty-four hour stream is a bandwidth commitment, not a burst. A higher bitrate gives YouTube more detail to work with, but only if the connection holds it for the whole run: every transient network problem becomes a dropped frame, and dropped frames over a long run are what push YouTube from a stream health warning to an actual interruption. Loopcast sends a steady 6,000 kbps, which is above YouTube’s 5 Mbps minimum but below its 14 Mbps recommendation. If you stream from your own encoder and your upload can hold more, go higher.
Constant bitrate is the right choice here
Variable bitrate saves bandwidth on still scenes, which sounds ideal for ambient loops. In practice live ingest prefers a predictable stream, and CBR is what keeps the buffer behaving over a long session. Loopcast encodes CBR for exactly this reason.
Get the source right and the rest follows
Encoding cannot add detail that was never captured. A 1080p export from your editor, with the audio already mixed and cleared, gives a far better result than uprezzing a compressed download. Upload the best master you have and let the encode step do the format work.
Loopcast re-encodes every upload automatically (for YouTube: 1080p30 H.264 CBR at 6,000 kbps, a keyframe every 2 seconds, AAC at 128 kbps), so you do not have to match these numbers yourself. They are here so you know what is happening to your file and why.
Source: YouTube Help: Choose live encoder settings, bitrates, and resolutions. Checked 26 Oct 2026. YouTube updates this page; its numbers win.