diff --git a/src/state_portal.rs b/src/state_portal.rs
index 47f80c8..e895ef6 100644
--- a/src/state_portal.rs
+++ b/src/state_portal.rs
@@ -464,7 +464,7 @@ impl StatePortal {
         // damage-driven variable fps — issue #24). MP4: keep sequential counter;
         // file output doesn't need real-time PTS and changing it would alter
         // playback speed during static periods.
-        let pts = if self.webrtc.is_some() {
+        let pts = if self.webrtc_thread.is_some() {
             self.compute_capture_pts(frame.pts)
         } else {
             self.frames_encoded as i64
@@ -579,7 +579,8 @@ impl StatePortal {
             0
         };
         let ticks_i128 = (relative_ns.saturating_mul(i128::from(self.args.fps))) / NS_PER_SEC;
-        let mut pts = i64::try_from(ticks_i128).unwrap_or(i64::MAX);
+        let computed_pts = i64::try_from(ticks_i128).unwrap_or(i64::MAX);
+        let mut pts = computed_pts;
 
         if let Some(last) = self.last_pts_emitted {
             if pts <= last {