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https://github.com/blakeblackshear/frigate.git
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Optimize stacked recordings (#6809)
* Make camera recordings mover asynchronous * Formatting * Move to using cv2 instead of external ffmpeg process * Use ffprobe if cv2 failed * Formatting * Fix bad access * Formatting * Update frigate/record/maintainer.py Co-authored-by: Blake Blackshear <blakeb@blakeshome.com> * Update name of caller --------- Co-authored-by: Blake Blackshear <blakeb@blakeshome.com>
This commit is contained in:
Nicolas Mowen
GitHub
parent
0592cedcde
commit
b66810247e
@ -1,5 +1,6 @@
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"""Maintain recording segments in cache."""
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import asyncio
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import datetime
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import logging
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import multiprocessing as mp
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@ -20,7 +21,7 @@ from frigate.config import FrigateConfig, RetainModeEnum
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from frigate.const import CACHE_DIR, MAX_SEGMENT_DURATION, RECORD_DIR
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from frigate.models import Event, Recordings
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from frigate.types import RecordMetricsTypes
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from frigate.util import area
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from frigate.util import area, get_video_properties
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logger = logging.getLogger(__name__)
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@ -42,7 +43,7 @@ class RecordingMaintainer(threading.Thread):
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self.recordings_info: dict[str, Any] = defaultdict(list)
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self.end_time_cache: dict[str, Tuple[datetime.datetime, float]] = {}
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def move_files(self) -> None:
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async def move_files(self) -> None:
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cache_files = sorted(
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[
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d
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@ -121,115 +122,100 @@ class RecordingMaintainer(threading.Thread):
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)
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.order_by(Event.start_time)
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)
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for r in recordings:
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cache_path = r["cache_path"]
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start_time = r["start_time"]
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# Just delete files if recordings are turned off
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if (
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camera not in self.config.cameras
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or not self.process_info[camera]["record_enabled"].value
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):
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await asyncio.gather(
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*(self.validate_and_move_segment(camera, events, r) for r in recordings)
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)
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async def validate_and_move_segment(
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self, camera: str, events: Event, recording: dict[str, any]
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) -> None:
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cache_path = recording["cache_path"]
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start_time = recording["start_time"]
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# Just delete files if recordings are turned off
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if (
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camera not in self.config.cameras
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or not self.process_info[camera]["record_enabled"].value
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):
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Path(cache_path).unlink(missing_ok=True)
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self.end_time_cache.pop(cache_path, None)
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return
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if cache_path in self.end_time_cache:
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end_time, duration = self.end_time_cache[cache_path]
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else:
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segment_info = get_video_properties(cache_path, get_duration=True)
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if segment_info["duration"]:
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duration = float(segment_info["duration"])
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else:
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duration = -1
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# ensure duration is within expected length
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if 0 < duration < MAX_SEGMENT_DURATION:
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end_time = start_time + datetime.timedelta(seconds=duration)
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self.end_time_cache[cache_path] = (end_time, duration)
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else:
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if duration == -1:
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logger.warning(f"Failed to probe corrupt segment {cache_path}")
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logger.warning(f"Discarding a corrupt recording segment: {cache_path}")
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Path(cache_path).unlink(missing_ok=True)
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return
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# if cached file's start_time is earlier than the retain days for the camera
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if start_time <= (
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(
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datetime.datetime.now()
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- datetime.timedelta(
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days=self.config.cameras[camera].record.retain.days
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)
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)
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):
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# if the cached segment overlaps with the events:
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overlaps = False
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for event in events:
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# if the event starts in the future, stop checking events
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# and remove this segment
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if event.start_time > end_time.timestamp():
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overlaps = False
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Path(cache_path).unlink(missing_ok=True)
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self.end_time_cache.pop(cache_path, None)
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continue
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break
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if cache_path in self.end_time_cache:
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end_time, duration = self.end_time_cache[cache_path]
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else:
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ffprobe_cmd = [
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"ffprobe",
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"-v",
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"error",
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"-show_entries",
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"format=duration",
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"-of",
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"default=noprint_wrappers=1:nokey=1",
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f"{cache_path}",
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]
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p = sp.run(ffprobe_cmd, capture_output=True)
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if p.returncode == 0 and p.stdout.decode():
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duration = float(p.stdout.decode().strip())
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else:
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duration = -1
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# if the event is in progress or ends after the recording starts, keep it
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# and stop looking at events
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if event.end_time is None or event.end_time >= start_time.timestamp():
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overlaps = True
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break
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# ensure duration is within expected length
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if 0 < duration < MAX_SEGMENT_DURATION:
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end_time = start_time + datetime.timedelta(seconds=duration)
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self.end_time_cache[cache_path] = (end_time, duration)
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else:
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if duration == -1:
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logger.warning(
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f"Failed to probe corrupt segment {cache_path} : {p.returncode} - {str(p.stderr)}"
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)
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logger.warning(
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f"Discarding a corrupt recording segment: {cache_path}"
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)
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Path(cache_path).unlink(missing_ok=True)
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continue
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# if cached file's start_time is earlier than the retain days for the camera
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if start_time <= (
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(
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datetime.datetime.now()
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- datetime.timedelta(
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days=self.config.cameras[camera].record.retain.days
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)
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)
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):
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# if the cached segment overlaps with the events:
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overlaps = False
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for event in events:
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# if the event starts in the future, stop checking events
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# and remove this segment
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if event.start_time > end_time.timestamp():
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overlaps = False
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Path(cache_path).unlink(missing_ok=True)
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self.end_time_cache.pop(cache_path, None)
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break
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# if the event is in progress or ends after the recording starts, keep it
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# and stop looking at events
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if (
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event.end_time is None
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or event.end_time >= start_time.timestamp()
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):
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overlaps = True
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break
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if overlaps:
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record_mode = self.config.cameras[
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camera
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].record.events.retain.mode
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# move from cache to recordings immediately
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self.store_segment(
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camera,
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start_time,
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end_time,
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duration,
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cache_path,
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record_mode,
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)
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# if it doesn't overlap with an event, go ahead and drop the segment
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# if it ends more than the configured pre_capture for the camera
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else:
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pre_capture = self.config.cameras[
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camera
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].record.events.pre_capture
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most_recently_processed_frame_time = self.recordings_info[
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camera
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][-1][0]
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retain_cutoff = most_recently_processed_frame_time - pre_capture
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if end_time.timestamp() < retain_cutoff:
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Path(cache_path).unlink(missing_ok=True)
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self.end_time_cache.pop(cache_path, None)
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# else retain days includes this segment
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else:
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record_mode = self.config.cameras[camera].record.retain.mode
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self.store_segment(
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camera, start_time, end_time, duration, cache_path, record_mode
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)
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if overlaps:
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record_mode = self.config.cameras[camera].record.events.retain.mode
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# move from cache to recordings immediately
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self.store_segment(
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camera,
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start_time,
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end_time,
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duration,
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cache_path,
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record_mode,
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)
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# if it doesn't overlap with an event, go ahead and drop the segment
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# if it ends more than the configured pre_capture for the camera
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else:
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pre_capture = self.config.cameras[camera].record.events.pre_capture
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most_recently_processed_frame_time = self.recordings_info[camera][-1][0]
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retain_cutoff = most_recently_processed_frame_time - pre_capture
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if end_time.timestamp() < retain_cutoff:
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Path(cache_path).unlink(missing_ok=True)
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self.end_time_cache.pop(cache_path, None)
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# else retain days includes this segment
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else:
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record_mode = self.config.cameras[camera].record.retain.mode
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self.store_segment(
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camera, start_time, end_time, duration, cache_path, record_mode
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)
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def segment_stats(
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self, camera: str, start_time: datetime.datetime, end_time: datetime.datetime
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@ -386,7 +372,7 @@ class RecordingMaintainer(threading.Thread):
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break
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try:
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self.move_files()
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asyncio.run(self.move_files())
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except Exception as e:
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logger.error(
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"Error occurred when attempting to maintain recording cache"
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@ -1144,3 +1144,54 @@ def to_relative_box(
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(box[2] - box[0]) / width, # w
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(box[3] - box[1]) / height, # h
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)
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def get_video_properties(url, get_duration=False):
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width = height = 0
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# Open the video stream
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video = cv2.VideoCapture(url)
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# Check if the video stream was opened successfully
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if not video.isOpened():
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logger.debug(f"Error opening video stream {url}.")
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return None
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# Get the width of frames in the video stream
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width = video.get(cv2.CAP_PROP_FRAME_WIDTH)
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# Get the height of frames in the video stream
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height = video.get(cv2.CAP_PROP_FRAME_HEIGHT)
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# Release the video stream
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video.release()
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result = {"width": round(width), "height": round(height)}
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if get_duration:
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# Get the frames per second (fps) of the video stream
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fps = video.get(cv2.CAP_PROP_FPS)
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total_frames = int(video.get(cv2.CAP_PROP_FRAME_COUNT))
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if fps and total_frames:
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duration = total_frames / fps
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else:
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# if cv2 failed need to use ffprobe
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ffprobe_cmd = [
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"ffprobe",
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"-v",
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"error",
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"-show_entries",
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"format=duration",
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"-of",
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"default=noprint_wrappers=1:nokey=1",
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f"{url}",
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]
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p = sp.run(ffprobe_cmd, capture_output=True)
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if p.returncode == 0 and p.stdout.decode():
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duration = float(p.stdout.decode().strip())
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else:
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duration = -1
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result["duration"] = duration
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return result
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