diff --git a/src/atem.ts b/src/atem.ts
index 4ae7edc17..e519fbc7b 100644
--- a/src/atem.ts
+++ b/src/atem.ts
@@ -1078,6 +1078,11 @@ export class Atem extends BasicAtem {
 		return this.sendCommand(command)
 	}
 
+	public async setEnableISORecording(enabled: boolean): Promise<void> {
+		const command = new Commands.RecordingISOCommand(enabled)
+		return this.sendCommand(command)
+	}
+
 	public async saveStartupState(): Promise<void> {
 		const command = new Commands.StartupStateSaveCommand()
 		return this.sendCommand(command)
diff --git a/src/commands/Recording/RecordingISOCommand.ts b/src/commands/Recording/RecordingISOCommand.ts
new file mode 100644
index 000000000..f7c19861a
--- /dev/null
+++ b/src/commands/Recording/RecordingISOCommand.ts
@@ -0,0 +1,34 @@
+import { SymmetricalCommand } from '../CommandBase'
+import { AtemState, InvalidIdError } from '../../state'
+import { ProtocolVersion } from '../../enums'
+
+export class RecordingISOCommand extends SymmetricalCommand<{ recordAllInputs: boolean }> {
+	public static readonly rawName = 'ISOi'
+	public static readonly minimumVersion = ProtocolVersion.V8_1_1
+
+	constructor(recordAllInputs: boolean) {
+		super({ recordAllInputs })
+	}
+
+	public serialize(): Buffer {
+		const buffer = Buffer.alloc(4)
+		buffer.writeUInt8(this.properties.recordAllInputs ? 1 : 0, 0)
+		return buffer
+	}
+
+	public static deserialize(rawCommand: Buffer): RecordingISOCommand {
+		const recordAllInputs = rawCommand.readUInt8(0) > 0
+
+		return new RecordingISOCommand(recordAllInputs)
+	}
+
+	public applyToState(state: AtemState): string {
+		if (!state.recording) {
+			throw new InvalidIdError('Recording')
+		}
+
+		state.recording.recordAllInputs = this.properties.recordAllInputs
+
+		return `recording.recordAllInputs`
+	}
+}
diff --git a/src/commands/Recording/index.ts b/src/commands/Recording/index.ts
index 918976eb6..98addadd2 100644
--- a/src/commands/Recording/index.ts
+++ b/src/commands/Recording/index.ts
@@ -1,4 +1,5 @@
 export * from './RecordingDiskCommand'
 export * from './RecordingDurationCommand'
+export * from './RecordingISOCommand'
 export * from './RecordingSettingsCommand'
 export * from './RecordingStatusCommand'
diff --git a/src/state/recording.ts b/src/state/recording.ts
index 13cf0fa61..0101ce4dd 100644
--- a/src/state/recording.ts
+++ b/src/state/recording.ts
@@ -5,6 +5,8 @@ export interface RecordingState {
 	status?: RecordingStateStatus
 	properties: RecordingStateProperties
 
+	recordAllInputs?: boolean
+
 	duration?: Timecode
 
 	disks: { [id: number]: RecordingDiskProperties | undefined }