diff --git a/machinery/src/video/mp4.go b/machinery/src/video/mp4.go
index 938e2e3..faaa783 100644
--- a/machinery/src/video/mp4.go
+++ b/machinery/src/video/mp4.go
@@ -66,6 +66,7 @@ type MP4 struct {
 	FragmentStartRawPTS     uint64            // Raw PTS for timing when to flush fragments
 	FragmentStartDTS        uint64            // Accumulated VideoTotalDuration at fragment start (matches tfdt)
 	LastKeyframeRawPTS      uint64            // Raw PTS of the most recently seen keyframe (in any fragment)
+	LastKeyframeGapMs       uint64            // Gap (ms) between the previous two consecutive keyframes
 	MoofBoxes               int64             // Number of moof boxes in the file
 	MoofBoxSizes            []int64           // Sizes of each moof box
 	SegmentDurations        []uint64          // Duration of each segment in timescale units
@@ -326,13 +327,23 @@ func (mp4 *MP4) AddSampleToTrack(trackID uint32, isKeyframe bool, data []byte, p
 		// fragment with a "media corruption" error because the inner IDR resets
 		// frame_num/POC inside what they expect to be a single GOP. Force a
 		// fragment boundary whenever two consecutive keyframes arrive much
-		// closer than a normal GOP (here: < 500 ms apart). This isolates the
-		// seam IDR into its own fragment so each fragment stays a clean GOP.
-		if !shouldFlush && trackID == uint32(mp4.VideoTrack) && mp4.Start &&
-			mp4.LastKeyframeRawPTS > 0 && pts > mp4.LastKeyframeRawPTS &&
-			pts-mp4.LastKeyframeRawPTS < MinNormalGOPMs {
-			log.Log.Warning(fmt.Sprintf("mp4.AddSampleToTrack(): forcing fragment flush at unexpectedly close keyframe (gap=%d ms, fragment elapsed=%d ms) - likely upstream loop/restart discontinuity", pts-mp4.LastKeyframeRawPTS, elapsed))
-			shouldFlush = true
+		// closer than a normal GOP.
+		//
+		// We only flag this as a seam when it is a *sudden* anomaly: the
+		// previous keyframe gap must have been healthy (>= MinNormalGOPMs).
+		// This avoids false positives on cameras that legitimately emit
+		// short-interval IDRs (short GOP, motion-triggered recovery IDRs,
+		// all-intra streams) where every keyframe would otherwise be flagged
+		// in a cascade, producing many tiny fragments and log spam.
+		if trackID == uint32(mp4.VideoTrack) && mp4.Start &&
+			mp4.LastKeyframeRawPTS > 0 && pts > mp4.LastKeyframeRawPTS {
+			gap := pts - mp4.LastKeyframeRawPTS
+			if !shouldFlush && gap < MinNormalGOPMs &&
+				(mp4.LastKeyframeGapMs == 0 || mp4.LastKeyframeGapMs >= MinNormalGOPMs) {
+				log.Log.Warning(fmt.Sprintf("mp4.AddSampleToTrack(): forcing fragment flush at unexpectedly close keyframe (gap=%d ms, fragment elapsed=%d ms) - likely upstream loop/restart discontinuity", gap, elapsed))
+				shouldFlush = true
+			}
+			mp4.LastKeyframeGapMs = gap
 		}
 		if trackID == uint32(mp4.VideoTrack) {
 			mp4.LastKeyframeRawPTS = pts