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Code Issues Actions 2 Packages Projects Releases Wiki Activity

Improve efficiency of frame listing for previews

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This commit is contained in:
Nicolas Mowen 2026-04-29 18:05:13 -06:00
parent b47a47c44a
commit ea0f4b6a0f
3 changed files with 36 additions and 16 deletions
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26
frigate/api/media.py
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@ -1368,12 +1368,17 @@ def preview_gif(
file_start = f"preview_{camera_name}-"
start_file = f"{file_start}{start_ts}.{PREVIEW_FRAME_TYPE}"
end_file = f"{file_start}{end_ts}.{PREVIEW_FRAME_TYPE}"
camera_files = [
entry.name
for entry in os.scandir(preview_dir)
if entry.name.startswith(file_start)
]
camera_files.sort()
selected_previews = []
for file in sorted(os.listdir(preview_dir)):
if not file.startswith(file_start):
continue
for file in camera_files:
if file < start_file:
continue
@ -1550,12 +1555,17 @@ def preview_mp4(
file_start = f"preview_{camera_name}-"
start_file = f"{file_start}{start_ts}.{PREVIEW_FRAME_TYPE}"
end_file = f"{file_start}{end_ts}.{PREVIEW_FRAME_TYPE}"
camera_files = [
entry.name
for entry in os.scandir(preview_dir)
if entry.name.startswith(file_start)
]
camera_files.sort()
selected_previews = []
for file in sorted(os.listdir(preview_dir)):
if not file.startswith(file_start):
continue
for file in camera_files:
if file < start_file:
continue

13
frigate/api/preview.py
View File

@ -148,12 +148,17 @@ def get_preview_frames_from_cache(camera_name: str, start_ts: float, end_ts: flo
file_start = f"preview_{camera_name}-"
start_file = f"{file_start}{start_ts}.{PREVIEW_FRAME_TYPE}"
end_file = f"{file_start}{end_ts}.{PREVIEW_FRAME_TYPE}"
camera_files = [
entry.name
for entry in os.scandir(preview_dir)
if entry.name.startswith(file_start)
]
camera_files.sort()
selected_previews = []
for file in sorted(os.listdir(preview_dir)):
if not file.startswith(file_start):
continue
for file in camera_files:
if file < start_file:
continue

13
frigate/data_processing/post/review_descriptions.py
View File

@ -366,12 +366,17 @@ class ReviewDescriptionProcessor(PostProcessorApi):
file_start = f"preview_{camera}-"
start_file = f"{file_start}{start_time}.webp"
end_file = f"{file_start}{end_time}.webp"
camera_files = [
entry.name
for entry in os.scandir(preview_dir)
if entry.name.startswith(file_start)
]
camera_files.sort()
all_frames: list[str] = []
for file in sorted(os.listdir(preview_dir)):
if not file.startswith(file_start):
continue
for file in camera_files:
if file < start_file:
if len(all_frames):
all_frames[0] = os.path.join(preview_dir, file)