A row is one independent channel: one source in, up to two streams out. The main Pulsar window is a vertical stack of these rows, lettered A through Z. This page covers what's the same on every row — adding rows, choosing the source, reordering, the output toggles, and per-row settings. For each source type's own details, see NDI, Screen / Camera / Testcard, File, Hardware Capture, SRT Input, and Unreal Engine.
Where to find it
The row list is the main window — it's there the moment Pulsar launches. On every row you'll use:
+ (green, bottom right corner of footer) — add a row.
Source tag (wide button in the middle) — configure the source.
Gear (far right) — per-row settings.
See The Main Window for the full layout.
Source types
NDI, GUI (screen / window / camera), SRT, GEN (testcard) and EXT (hardware capture — DeckLink) are available out of the box. To use FILE or Unreal Engine (UE) sources — both (BETA) — turn them on in Settings → Beta Features first.
Stop a row before you change it
Most row controls lock while a stream is live, so stop the relevant streams first:
Source tag, type, colorimetry lock while an output on that row is live.
Gear, delete and reorder lock while any output on any row is connected or connecting.
Rule of thumb: stop the row before changing its source, type or colour; stop everything before changing settings, deleting or reordering.
Common tasks
Add a row
Click the green + at the bottom-right corner of the list.
Pick a type in the Select Source Type dialog.
The row appears with the next free letter.
Click its source tag to configure the source.
Up to 26 rows (A–Z). On macOS, adding a GUI source triggers a Screen Recording permission check.
Change a row's source type
Stop any streaming on that row.
Click the coloured type button (e.g.
NDI).Pick a new type from the dropdown.
Each type remembers its own saved config, so switching back and forth keeps your work. A "Row type changed" toast confirms.
Reorder rows
Stop all streaming.
Press and hold the coloured letter badge at the far left.
Drag up or down (the drop target highlights blue) and release.
Letters re-assign automatically by position.
Show or hide a row's two outputs
Each row can carry two outputs, toggled by the round 1 (blue) and 2 (purple) buttons.
Click 1 to show/hide Output 1, 2 for Output 2.
Configure each enabled output on its sub-row (SRT URL or NDI name, plus the codec/bitrate badge).
A toggle locks only while that specific output is live. See Outputs: SRT & NDI.
Auto-start and auto-recover a row
Click the gear at the far right of the row.
Tick Auto-start stream on app launch to bring this row up a few seconds after launch.
Leave Auto-retry on connection failure ticked to have an errored row restart itself.
Click Apply.
Encoding lives on the per-output badge, not here.
Apply a colour conversion
Turn on Colorimetry (BETA) in Settings → Beta Features.
On the row (not streaming), click the LUT / colorimetry button.
Choose a Mode — Passthrough, OCIO, 3D LUT, or Metadata Override (HDR/BT.2020) — and save.
The icon lights up while a conversion is active. Full detail in Encoding, Bitrate & Colour.
Delete a row
Stop all streams on every row.
Click the red trash icon.
Confirm in the Delete Row? dialog. You can remove the last row.
The controls on a row
Left to right: the letter badge (drag to reorder), a checkbox that selects the row for bulk Start/Stop, the type button (click to convert the row), the wide source tag (opens source config — yellow "No source" until set, green with a name once connected), and the colorimetry button (BETA). When Orbit is on, an amber Orbit toggle adds a monitor copy of the row. The round 1 / 2 buttons reveal the two outputs; each enabled output shows a codec/bitrate badge (click it to open the Bitrate & Encoding window). GEN rows add a mute speaker button. At the far right are the trash (delete) and gear (per-row settings) icons.
Tips & gotchas
To disable a row, turn both outputs off. The checkbox by the letter badge is only a bulk-select for Start/Stop, not an enable switch.
The codec/bitrate badge opens a window — it doesn't cycle codecs on click. That's where you pick Source / Global / Custom, codec, encoder, bit-depth, chroma and bitrate.
Gear, delete and reorder watch every row. They stay locked while any output anywhere is connecting or connected, not just on the row you're touching.
One UE row at a time.
Platform notes
The rows UI is the same on macOS and Windows; only permission prompts differ:
GUI rows on macOS prompt for Screen Recording when created.
FILE rows on macOS prompt for Full Disk Access.
EXT (DeckLink) needs the capture hardware and its drivers installed.
See Installation & Setup for granting permissions, Troubleshooting if a source won't connect, and the Glossary for unfamiliar terms.