diff --git a/croppa/main.py b/croppa/main.py
index 5a66881..889d144 100644
--- a/croppa/main.py
+++ b/croppa/main.py
@@ -1057,6 +1057,39 @@ class VideoEditor:
         self.current_frame = max(0, min(frame_number, self.total_frames - 1))
         self.load_current_frame()
 
+    def jump_to_previous_marker(self):
+        """Jump to the previous defined marker (cut_start_frame/cut_end_frame)."""
+        if self.is_image_mode:
+            return
+        markers = [m for m in [self.cut_start_frame, self.cut_end_frame] if isinstance(m, int)]
+        if not markers:
+            return
+        markers = sorted(set(max(0, min(m, self.total_frames - 1)) for m in markers))
+        # Find previous marker relative to current_frame (wrap if needed)
+        prev = None
+        for m in markers:
+            if m < self.current_frame:
+                prev = m
+        if prev is None:
+            prev = markers[-1]
+        self.seek_to_frame(prev)
+
+    def jump_to_next_marker(self):
+        """Jump to the next defined marker (cut_start_frame/cut_end_frame)."""
+        if self.is_image_mode:
+            return
+        markers = [m for m in [self.cut_start_frame, self.cut_end_frame] if isinstance(m, int)]
+        if not markers:
+            return
+        markers = sorted(set(max(0, min(m, self.total_frames - 1)) for m in markers))
+        # Find next marker greater than current_frame (wrap if needed)
+        for m in markers:
+            if m > self.current_frame:
+                self.seek_to_frame(m)
+                return
+        # Wrap to first
+        self.seek_to_frame(markers[0])
+
     def advance_frame(self) -> bool:
         """Advance to next frame - handles playback speed and marker looping"""
         if not self.is_playing:
@@ -2816,6 +2849,8 @@ class VideoEditor:
             print("  1: Set cut start point")
             print("  2: Set cut end point")
             print("  T: Toggle loop between markers")
+            print("  ,: Jump to previous marker")
+            print("  .: Jump to next marker")
             if len(self.video_files) > 1:
                 print("  N: Next video")
                 print("  n: Previous video")
@@ -2929,14 +2964,14 @@ class VideoEditor:
                 if not self.is_image_mode:
                     if not self.auto_repeat_active:
                         self.start_auto_repeat_seek(1, False, True)  # Ctrl+D: +60 frames
-            elif key == ord(","):  # Comma - Previous frame (unaffected by multiplier)
-                # Seeking only for videos
+            elif key == ord(","):
+                # Jump to previous marker (cut start or end)
                 if not self.is_image_mode:
-                    self.seek_video_exact_frame(-1)  # -1 frame exactly
-            elif key == ord("."):  # Period - Next frame (unaffected by multiplier)
-                # Seeking only for videos
+                    self.jump_to_previous_marker()
+            elif key == ord("."):
+                # Jump to next marker (cut start or end)
                 if not self.is_image_mode:
-                    self.seek_video_exact_frame(1)  # +1 frame exactly
+                    self.jump_to_next_marker()
             elif key == ord("-") or key == ord("_"):
                 self.rotate_clockwise()
                 print(f"Rotated to {self.rotation_angle}°")