.env.example

S3_ACCESS_KEY=your-access-key-here
S3_SECRET_ACCESS_KEY=your-secret-key-here
S3_ENDPOINT_URL=https://os.zhdk.cloud.switch.ch
AWS_REQUEST_CHECKSUM_CALCULATION="when_required"
AWS_RESPONSE_CHECKSUM_VALIDATION="when_required"
Add S3 storage support via s3fs; make storage field required - New filesystem.py: make_fs() factory (returns s3fs.S3FileSystem or None), plus fsjoin/fsstem/fsname path helpers - config.py: storage field is now required ('local' or 's3'); load_config raises a clear ValueError when it is missing - video_loader, clip_selector, annotator: thread fs through all file I/O; local paths unchanged, S3 paths use fs.open/fs.exists/fs.pipe - annotation_script: load .env via python-dotenv at startup, create fs from config and pass to Annotator - Add .env.example with SwitchEngines endpoint and AWS checksum env vars - pyproject.toml: add s3fs and python-dotenv dependencies - Reduce default mask alpha from 40% to 15% - Update example clip names to colon-separated timestamps Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> 2026-05-20 16:15:38 +02:00			`S3_ACCESS_KEY=your-access-key-here`
			`S3_SECRET_ACCESS_KEY=your-secret-key-here`
			`S3_ENDPOINT_URL=https://os.zhdk.cloud.switch.ch`
			`AWS_REQUEST_CHECKSUM_CALCULATION="when_required"`
			`AWS_RESPONSE_CHECKSUM_VALIDATION="when_required"`