imaging/getting-started-with-image-streams.md

@@ -44,7 +44,7 @@ To use **csv-play** we need to know the binary format of the stream:
 t,3ui,s[921600]
 ```
 I.e. the format of the images output by **cv-cat** is:
-- **t**: 8-byte timestamp
+- **t**: 8-byte UTC timestamp
 - **3ui**: 3 4-byte integers (we will look into them in a minute)
 - **s[921600]**: followed by 921600 bytes of image (depending on your camera output, the size may be different; in my case, those are 640x480 3-byte RGB images, hence 640x480x3=921600)
 
@@ -61,7 +61,11 @@ The format: **\<header\>\<image\>**
 ### \<header\>
 Try to output only image headers:
 ```
-> cv-cat --camera --output header-only | csv-from-bin t,3ui | head
+> cv-cat --camera --output header-only | csv-from-bin t,3ui | head -n4
+20201119T233519.334569,480,640,16
+20201119T233519.385821,480,640,16
+20201119T233519.432076,480,640,16
+20201119T233519.484135,480,640,16
 ```
 20-byte header has [binary format](https://gitlab.com/orthographic/comma/-/wikis/csv/getting-started:-basic-data-manipulations,-ascii-and-binary-data) **t,3ui** consisting of
 - timestamp