Merge pull request #2267 from 100mslive/pawan-100ms-patch-3

Update captions.mdx

docs/ios/v2/how-to-guides/set-up-video-conferencing/captions.mdx

@@ -8,17 +8,24 @@ The SDK provides a callback with the transcript for each peer when they speak.
 
 ## Minimum Requirements
 
-- Minimum 100ms SDK version required is 1.9.0
+- Minimum 100ms SDK version required is 1.12.0
+
+## How to check if captions are started in a room?
+
+To check if live captions are enabled in a room, check if transcriptionState of type caption is in started state in HMSRoom object like below:
+
+```swift
+let captionsEnabled = hmsSDK.room?.transcriptionStates?.first { $0.state == HMSTranscriptionStatus.started } != nil }
+```
 
 ## How to implement closed captioning?
 
 Implement `on(transcripts: HMSTranscripts)` from `HMSUpdateListener` callback like below:
 
 ```swift
-    public func on(transcripts: HMSTranscripts) {
-        transcripts.transcripts.forEach { transcript in
-            // handle transcript
-        }
+public func on(transcripts: HMSTranscripts) {
+    transcripts.transcripts.forEach { transcript in
+        // handle transcript
     }
 }
 ```
@@ -51,5 +58,27 @@ Here is an example implemenation:
             lastTranscript = transcript
         }
     }
-}
 ```
+
+## How to toggle Live Transcriptions on/off
+You can toggle live transcriptions on/off at runtime that can help save costs. Use startTranscription() method to start the transcription and stopTranscription() method to stop transcription like below:
+```swift
+    // Start Real Time Transcription
+    sdk.startTranscription() { success, error in
+        if let error = error {
+            // handle error
+        } else {
+            // success
+        }
+    }
+
+    // Stop Real Time Transcription
+    sdk.stopTranscription() { success, error in
+        if let error = error {
+            // handle error
+        } else {
+            // success
+        }
+    }
+```
+