Doug Johnson Productions

Broadcast Monitor ยท Advanced Monitoring

Look deeper when something does not match.

Professional brings two-source comparison, advanced color analysis, and signal metadata into your monitoring workspace.

Comparison: make two sources easier to match.

Professional overlays two sources in one Picture, Waveform, or Vectorscope view. Complementary colors identify each input; a Mix display blends them. Instead of remembering one camera while looking at the next, compare their behavior in the same place.

During rehearsal: frame the same subject on both cameras, freeze one as your reference, and adjust the other. Picture and waveform offsets help align the subject horizontally; picture comparison also allows vertical alignment.

A reference you can keep in view

Freeze either source independently, isolate picture channels, and zoom or pan the picture for a closer inspection. Waveform magnification helps examine a smaller range of signal levels.

The overlay compares the latest available frames, without timestamp synchronization. Use a steady subject for camera matching; movement or different capture delays can create differences unrelated to exposure or color.

Picture comparison with green and magenta overlays and horizontal and vertical alignment controls
See alignment directly: green and magenta edges separate where the inputs differ. This example uses the same built-in concert scene on both inputs, with input 2 deliberately shifted horizontally.
Two-source brightness waveform comparison with green and magenta traces
Compare signal levels in one view. Here, the same sample scene is deliberately offset to show the two traces; overlapping levels appear together, while separated traces make differences easier to follow.

Click any screenshot to open the larger view and inspect the controls and traces.

Three more ways to understand color.

Included in Professional, these views answer different questions about the same signal. Keep the ordinary picture nearby so measurements stay connected to your creative intent.

Hue / Saturation picture

This view preserves source chroma while holding encoded brightness at a fixed middle level. Removing brightness variation from the display makes color differences easier to inspect.

Try it when matching cameras: look for a color cast on a neutral subject or differences in stage-light color, then return to the normal picture to judge the result.

CIE xy chromaticity

Chromaticity places colors on a two-dimensional map with a gamut triangle as a reference. A gamut describes a color space's range of colors; the plot helps you see where the signal falls relative to that reference.

Follow source metadata or choose a reference such as Rec.709, P3, or Rec.2020. Unknown source metadata defaults to Rec.709, so confirm the source interpretation before drawing conclusions.

Channel Plot

The double-diamond display compares green with red in the upper diamond and green with blue in the lower one. Traces outside the reference diamonds reveal RGB values outside the nominal range.

Try it with vivid lighting or graphics: investigate excursions that a pleasing picture might hide. Values outside the range remain visible in the analysis instead of being clipped away before plotting.

CIE xy chromaticity plot of the built-in concert scene with gamut reference outlines
Put vivid stage lighting on a color map. The CIE xy plot shows the sample scene against the gamut references, helping connect its blue and magenta lighting to the signal's color distribution.
Double-diamond Channel Plot showing green versus red and green versus blue
Look at channel relationships: green versus red above, green versus blue below. The reference diamonds give excursions a visible boundary to investigate alongside the ordinary picture.

Captions: check the words as well as the picture.

Professional includes a Caption Data scope for supported CEA-608/708 text, plus an optional picture overlay with caption-channel or service selection. Watch text changes and clears, with source timecode when available, to help check that the expected captions are arriving.

This is plain-text monitoring, not a complete reproduction of broadcast caption styling and positioning. The picture overlay is for on-screen inspection and is not burned into output video.

Ancillary data: investigate what changed.

Timecodes and other metadata can travel alongside a video frame. Professional's Ancillary Data scope lists the fields supplied by the source, highlights changed values, and retains a rolling minute of snapshots. Browse a moment or double-click a field to examine its history while capture continues.

Blackmagic capture can expose timecodes and SDI ancillary packets, including supported caption payloads. Available fields depend on the signal and adapter. The current file and OpenCV network decoding path does not expose captions or ancillary metadata.

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