The original premise (extract FFmpegEncoder / StreamHealthMonitor / FramePump
classes) was a no-op — those already exist as Services/Encoder/FfmpegEncoder.cs
and Services/Encoder/FramePump.cs. The honest functional seam was the local
recording-output concern, which was interleaved with live-stream orchestration:
- New MainViewModel.Recording.cs (121): StartRecordFile, FinalizeRecordingAsync,
UniquePath, ChooseRecordFolder, ResetRecordFolder, DefaultRecordFolder + the
recording fields (_recordFolder, RecordFolderDisplay, _activeRecordPath,
_recordStartTime, _recordLength).
- MainViewModel.Streaming.Operations.cs 475 -> 377 (keeps live session lifecycle,
health, visuals).
- MainViewModel.Streaming.cs 328 -> 323 (keeps pills/state/properties intact).
Same partial class — all MVVM bound-property glue untouched, no behavior change.
Build 0 warnings; 246 pass, only the 2 known failures.
Docs: ViewModels/index.md tracker updated in same commit.
Streaming.cs 789 -> 330. Moved the go-live/record/health operation bodies into a
new MainViewModel.Streaming.Operations.cs partial (459 lines: StartSession,
BeginRecordOnly, BeginGoLive, StartRecordFile, PrepareAndStartLiveAsync,
PollHealthAsync/OnHealthPollTick/ApplyHealthIssue, StopStream,
FinalizeRecordingAsync, UniquePath, Choose/ResetRecordFolder, DefaultRecordFolder,
OnFramePumpFailed/HealthUpdated, ApplyHealth, ResetHealth, BuildEncoderOptions).
Streaming.cs keeps state, quality/resolution tiers, session timer, command
declarations. Pruned dead usings in both files.
Zero behavior change; build 0 warnings; 246 pass, only the 2 known failures.
Docs: ViewModels/index.md Phase 3 tracker updated in same commit.
MainViewModel.Streaming.cs (787 lines) takes the full go-live/record flow
(StartSession/BeginRecordOnly/BeginGoLive/PrepareAndStartLiveAsync/StopStream,
record-file naming + rename-on-stop), health pipeline (FramePump.Handle +
poll, report-by-exception banner), session timer, REC/ON-AIR start/end UI,
the resolution quality dropdown over the 1920x1080 master, live window
visual tokens (UpdateLiveVisuals), record-folder commands, broadcast
pull-out (CurrentBroadcastId/BroadcastForm) and the stream-state setters
(StreamStatus/StreamVisibility) + their fields. Core drops 1890 -> 1119
lines. Cross-partial references (IsConnected, IsEditMode, BrandFlash*,
_audioMixer, ctor wiring) are safe on one partial class.
Zero behavior change; build 0 warnings; 246 pass, only the 2 known
pre-existing failures (audio-mix gain + round-clip grab). Docs: index.md
Streaming row added + core row trimmed in the same commit.