Odin/native/muninn-video-encoder

Muninn controllable video encoder

This process owns desktop capture frames and the long-lived NVENC context for Muninn's realtime video leg. Annex-B H.264 is written to stdout. Stdin accepts one command per line:

• IDR marks the next submitted frame AV_PICTURE_TYPE_I. With NVENC forced-idr=1, FFmpeg lowers that request to an IDR rather than an ordinary intra frame.
• BITRATE <kbps> reconfigures average/max bitrate and the two-frame VBV on the next submitted frame. FFmpeg's NVENC backend performs an in-session nvEncReconfigureEncoder and forces an IDR for the rate transition.
• QUIT ends capture cleanly.

The process does not own transport, audio, packetization, deadlines, or repair. Muninn owns those and writes IDR only when receiver feedback proves the decode chain is invalid.

Build against the same FFmpeg development snapshot shipped with OBS:

cmake -S . -B build -DFFMPEG_ROOT=E:/path/to/obs-deps
cmake --build build --config Release

--input defaults to ddagrab=framerate=60:output_idx=0:draw_mouse=1. --force-idr-frame N exists only for deterministic encoder verification. --frames N bounds deterministic verification runs.