add yt videos - streaming, photo sketching, measurement tools

src/field/measure/index.md

@@ -8,6 +8,8 @@ description: In the Mergin Maps mobile app, it is possible to measure length and
 ## Measure length and area in Mergin Maps mobile app
 In the <MobileAppNameShort />, it is possible to measure length and area on a map window. Measurement tools use the same units as are used by the QGIS project.
 
+<YouTube id="b9ybh_IgC7o" title="Measurement Tools" />
+
 To open the measurement tools, tap the **More** button in the bottom navigation panel and use the **Measure** option.
    ![Mergin Maps mobile app Measurement tools](./mobile-measure.jpg "Mergin Maps mobile app Measurement tools")
 

src/field/mobile-features/index.md

@@ -57,7 +57,12 @@ Once the survey of the feature is completed, tap **Record** and fill in the form
 ![Surveying lines in Mergin Maps mobile app](./mobile-capture-line.jpg "Surveying lines in Mergin Maps mobile app")
 
 #### Streaming mode to survey lines or areas
-Lines and areas can be also captured automatically based on your position. Make sure you are in the [**recording**](#adding-features) mode and that your active layer is a line or polygon.
+Lines and areas can be also captured automatically based on your position. 
+
+Here is a video tutorial:
+<YouTube id="069-fXNqyJY" title="Streaming mode" />
+
+Make sure you are in the [**recording**](#adding-features) mode and that your active layer is a line or polygon.
 
 Tap the **streaming** button and then **Start streaming mode**.
 

src/field/photo-sketching/index.md

@@ -8,6 +8,9 @@ Photo sketches can be used to annotate photos or pictures added to a feature, in
 Photo sketching is a feature in preview. While it works for most devices and setups, you may encounter some issues.
 :::
 
+Here is a video tutorial:
+<YouTube id="9s3HLOnB4Jo" title="Mergin Maps tutorial - Photo Sketching" />
+
 ## Enable photo sketching
 
 <SinceBadge type="Plugin" version="2025.3.4" />