diff --git a/alembic/versions/039_add_transition_duration.py b/alembic/versions/039_add_transition_duration.py
new file mode 100644
index 000000000..06c195ec4
--- /dev/null
+++ b/alembic/versions/039_add_transition_duration.py
@@ -0,0 +1,33 @@
+"""add transition_duration to edit_plan_clips
+
+Revision ID: 039_transition_duration
+Revises: 038_error_retry
+Create Date: 2026-07-14 09:00:00.000000
+"""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "039_transition_duration"
+down_revision = "038_error_retry"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "edit_plan_clips",
+        sa.Column(
+            "transition_duration",
+            sa.Float(),
+            nullable=False,
+            server_default="0.0",
+        ),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("edit_plan_clips", "transition_duration")
diff --git a/docs/schema-metadata-snapshot.json b/docs/schema-metadata-snapshot.json
index f500bc075..f603a3bdb 100644
--- a/docs/schema-metadata-snapshot.json
+++ b/docs/schema-metadata-snapshot.json
@@ -858,6 +858,14 @@
           "type": "VARCHAR(20)",
           "unique": false
         },
+        {
+          "index": false,
+          "name": "transition_duration",
+          "nullable": false,
+          "primary_key": false,
+          "type": "FLOAT",
+          "unique": false
+        },
         {
           "index": true,
           "name": "status",