move clip.mp4 backend to clips folder (#11834)

* move clip.mp4 backend to clips folder

* improve caching

* fix check

docker/main/rootfs/usr/local/nginx/conf/nginx.conf

@@ -131,6 +131,8 @@ http {
                 image/jpeg jpg;
             }
 
+            expires 7d;
+            add_header Cache-Control "public";
             autoindex on;
             root /media/frigate;
         }

frigate/api/media.py

@@ -459,7 +459,7 @@ def recording_clip(camera_name, start_ts, end_ts):
         )
 
     file_name = secure_filename(file_name)
-    path = os.path.join(CACHE_DIR, file_name)
+    path = os.path.join(CLIPS_DIR, f"cache/{file_name}")
 
     if not os.path.exists(path):
         ffmpeg_cmd = [
@@ -511,7 +511,7 @@ def recording_clip(camera_name, start_ts, end_ts):
         response.headers["Content-Disposition"] = "attachment; filename=%s" % file_name
     response.headers["Content-Length"] = os.path.getsize(path)
     response.headers["X-Accel-Redirect"] = (
-        f"/cache/{file_name}"  # nginx: https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_ignore_headers
+        f"/clips/cache/{file_name}"  # nginx: https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_ignore_headers
     )
 
     return response
@@ -1232,8 +1232,8 @@ def preview_gif(camera_name: str, start_ts, end_ts, max_cache_age=2592000):
 
 @MediaBp.route("/<camera_name>/start/<int:start_ts>/end/<int:end_ts>/preview.mp4")
 @MediaBp.route("/<camera_name>/start/<float:start_ts>/end/<float:end_ts>/preview.mp4")
-def preview_mp4(camera_name: str, start_ts, end_ts, max_cache_age=2592000):
-    file_name = f"clip_{camera_name}_{start_ts}-{end_ts}.mp4"
+def preview_mp4(camera_name: str, start_ts, end_ts, max_cache_age=604800):
+    file_name = f"preview_{camera_name}_{start_ts}-{end_ts}.mp4"
 
     if len(file_name) > 1000:
         return make_response(

frigate/app.py

@@ -100,7 +100,7 @@ class FrigateApp:
         for d in [
             CONFIG_DIR,
             RECORD_DIR,
-            CLIPS_DIR,
+            f"{CLIPS_DIR}/cache",
             CACHE_DIR,
             MODEL_CACHE_DIR,
             EXPORT_DIR,

frigate/record/cleanup.py

@@ -11,7 +11,7 @@ from pathlib import Path
 from playhouse.sqlite_ext import SqliteExtDatabase
 
 from frigate.config import CameraConfig, FrigateConfig, RetainModeEnum
-from frigate.const import CACHE_DIR, MAX_WAL_SIZE, RECORD_DIR
+from frigate.const import CACHE_DIR, CLIPS_DIR, MAX_WAL_SIZE, RECORD_DIR
 from frigate.models import Event, Previews, Recordings, ReviewSegment
 from frigate.record.util import remove_empty_directories, sync_recordings
 from frigate.util.builtin import clear_and_unlink, get_tomorrow_at_time
@@ -28,11 +28,19 @@ class RecordingCleanup(threading.Thread):
         self.config = config
         self.stop_event = stop_event
 
+    def clean_tmp_previews(self) -> None:
+        """delete any previews in the cache that are more than 1 hour old."""
+        for p in Path(CACHE_DIR).rglob("preview_*.mp4"):
+            logger.debug(f"Checking preview {p}.")
+            if p.stat().st_mtime < (datetime.datetime.now().timestamp() - 60 * 60):
+                logger.debug("Deleting preview.")
+                clear_and_unlink(p)
+
     def clean_tmp_clips(self) -> None:
-        """delete any clips in the cache that are more than 5 minutes old."""
-        for p in Path(CACHE_DIR).rglob("clip_*.mp4"):
+        """delete any clips in the cache that are more than 1 hour old."""
+        for p in Path(os.path.join(CLIPS_DIR, "cache")).rglob("clip_*.mp4"):
             logger.debug(f"Checking tmp clip {p}.")
-            if p.stat().st_mtime < (datetime.datetime.now().timestamp() - 60 * 1):
+            if p.stat().st_mtime < (datetime.datetime.now().timestamp() - 60 * 60):
                 logger.debug("Deleting tmp clip.")
                 clear_and_unlink(p)
 
@@ -335,7 +343,7 @@ class RecordingCleanup(threading.Thread):
                 logger.info("Exiting recording cleanup...")
                 break
 
-            self.clean_tmp_clips()
+            self.clean_tmp_previews()
 
             if (
                 self.config.record.sync_recordings
@@ -346,6 +354,7 @@ class RecordingCleanup(threading.Thread):
                 next_sync = get_tomorrow_at_time(3)
 
             if counter == 0:
+                self.clean_tmp_clips()
                 self.expire_recordings()
                 remove_empty_directories(RECORD_DIR)
                 self.truncate_wal()

frigate/record/maintainer.py

@@ -82,7 +82,7 @@ class RecordingMaintainer(threading.Thread):
             for d in os.listdir(CACHE_DIR)
             if os.path.isfile(os.path.join(CACHE_DIR, d))
             and d.endswith(".mp4")
-            and not d.startswith("clip_")
+            and not d.startswith("preview_")
         ]
 
         files_in_use = []

frigate/video.py

@@ -300,7 +300,7 @@ class CameraWatchdog(threading.Thread):
                 for d in os.listdir(CACHE_DIR)
                 if os.path.isfile(os.path.join(CACHE_DIR, d))
                 and d.endswith(".mp4")
-                and not d.startswith("clip_")
+                and not d.startswith("preview_")
             ]
         )
         newest_segment_time = latest_segment