Fix FourCC in docs (#164)

Author: cjsha

articles/hardware/ucla-miniscope-v4/camera.md

@@ -21,9 +21,14 @@ The <xref:OpenEphys.Onix1.UclaMiniscopeV4CameraData> operator generates a sequen
 The relevant members are selected from the `UclaMiniscopeV4CameraFrame` by right-clicking the
 `UclaMiniscopeV4CameraData` operator and choosing the following Output members: `Camera`, and `Clock`. The
 [VideoWriter](xref:Bonsai.Vision.VideoWriter) saves the `Camera` to a files with the following format:
-`ucla-miniscope-v4-video_.avi` with "GREY" FourCC. The [MatrixWriter](xref:Bonsai.Dsp.MatrixWriter) saves the `Clock` to a
+`ucla-miniscope-v4-video_.avi` with "DIB " FourCC. The [MatrixWriter](xref:Bonsai.Dsp.MatrixWriter) saves the `Clock` to a
 files with the following format: `ucla-miniscope-v4-clock_.raw`.
 
+> [!NOTE]
+> - If you edit the FourCC property yourself and want to use "DIB ", take care to include a space as the fourth character.
+> - You can also use the "FMP4" FourCC which compresses the video data into smaller file sizes. However, "FMP4" can only
+> be used with 8-bit data.
+
 Try adjusting the `FrameRate`, `SensorGain`, `LEDBrightness`, and `LiquidLensVoltage` properties while the workflow is
 running and observing the camera data. Follow our <xref:visualize-data> guide if you are not sure how to observe the
 camera data. 

workflows/hardware/ucla-miniscope-v4/camera.bonsai

@@ -22,7 +22,7 @@
           <cv:Suffix>FileCount</cv:Suffix>
           <cv:Buffered>true</cv:Buffered>
           <cv:Overwrite>false</cv:Overwrite>
-          <cv:FourCC>GREY</cv:FourCC>
+          <cv:FourCC>DIB </cv:FourCC>
           <cv:FrameRate>30</cv:FrameRate>
           <cv:FrameSize>
             <cv:Width>0</cv:Width>

workflows/hardware/ucla-miniscope-v4/ucla-miniscope-v4.bonsai

@@ -152,7 +152,7 @@
           <cv:Suffix>FileCount</cv:Suffix>
           <cv:Buffered>true</cv:Buffered>
           <cv:Overwrite>false</cv:Overwrite>
-          <cv:FourCC>GREY</cv:FourCC>
+          <cv:FourCC>DIB </cv:FourCC>
           <cv:FrameRate>30</cv:FrameRate>
           <cv:FrameSize>
             <cv:Width>0</cv:Width>