Reverted autotrim changes, fixed existing video check, added readme n…

…ote about stream resolutions.

README.md

@@ -124,14 +124,21 @@ Match patterns use [micromatch](https://github.com/micromatch/micromatch). For e
 | Japanology and Lunch ON!   | `["*japanology*", "*lunch*"]`    |
 | Everything except Newsline | `["!(*newsline*\|*nl bridge*)"]` |
 
+### Crop & Trim
+
+These CPU-intensive features are enabled by default so be sure to disable them on resource-limited systems. 
+
+Additionally, the source materials they use for detection relies on the NHK World stream being in 1080p. **Using a lower resolution stream URL will result in crashes upon detection if trim or crop is enabled.**
+
+If you desire to use a lower resolution or if NHK discontinues the 1080p stream, disable these features.
+
 ## Running as a docker container
 
 Docker images are available on [Docker Hub](https://hub.docker.com/repository/docker/coordspace/nhk-record)
 
 Example docker-compose.yml:
 
 ```
-version: "3.7"
 services:
   nhk-record:
     image: coordspace/nhk-record:latest

config.json

@@ -7,7 +7,7 @@
   "logLevelFile": "debug",
   "matchPattern": ["*"],
   "minimumDuration": 240000,
-  "safetyBuffer": 5000,
+  "safetyBuffer": 40000,
   "saveDir": "/recordings/",
   "scheduleUrl": "https://nwapi.nhk.jp",
   "streamUrl": "https://b-nhkwlive-ojp.nhkworld.jp/hls/live/2003459-b/nhkwlive-ojp-en/index_4M.m3u8",

src/ffmpeg.ts

@@ -176,7 +176,7 @@ const getFfmpegBoundaryDetectionArguments = (
       '-filter_complex',
       [
         // Extract luma channels
-        '[0:0]scale=960:540,format=pix_fmts=yuv420p|yuv444p|yuv410p,extractplanes=y[vy]',
+        '[0:0]extractplanes=y[vy]',
         '[1]extractplanes=y[by]',
         '[2]extractplanes=y[wy]',
         '[3]extractplanes=y[wby]',

src/storage.ts

@@ -79,7 +79,7 @@ export const recordingExists = async (programme: Programme): Promise<boolean> =>
       stat(getInProgressPath(programme))
         .then((s) => Date.now() - s.mtimeMs < MAX_IN_PROGRESS_AGE)
         .catch(() => null),
-      stat(getSavePath(programme)).catch(() => null)
+        stat(`${getSavePath(programme)}${getSuffix(FileType.SUCCESSFUL, programme)}`).catch(() => null)
     ])
   ).some((s) => !!s);