Qualities

A channel may carry lower qualities beside its own picture, so a box on a weak line steps down instead of stalling. Choose them in the channel's form:

Quality	Picture	Video	Audio
1080p	1920×1080	5 Mb/s	128 kb/s
720p	1280×720	2.8 Mb/s	128 kb/s
480p	854×480	1.4 Mb/s	96 kb/s
360p	640×360	800 kb/s	96 kb/s

All are H.264 and AAC with a keyframe every 2 seconds, so players switch cleanly; a quality is never scaled up past the source.

One address

A channel with qualities keeps its address: /{slug}/index.m3u8 becomes a master playlist naming the source picture first, then each quality, every one with the viewer's token. A quality also plays alone at /{slug}/{quality}/index.m3u8. One token for /{slug}/ plays them all.

CPU or Intel GPU

Intel GPU (Quick Sync)	The installer finds the host's render device (/dev/dri/renderD128) and gives it to the agent. At start the agent encodes a second of test picture on it; if that works, every channel's qualities are scaled and encoded there
CPU	Otherwise, or with FLOWTRIX_HWACCEL=none in .env. About one to two cores for each 1080p channel made into three qualities

System › Settings shows which one is used, and why. The source is decoded on the CPU either way, so any codec a source has works.

Limits of this version

• A channel with qualities cannot be on demand: making the qualities reads the channel all the time.
• Qualities need the transcoding feature in your plan.
• HEVC qualities and NVIDIA GPUs are planned.