I-IAL9000/shrinkerr v0.5.6 on GitHub

Added

FFmpeg threads per job Settings slider (Encoding → after Parallel Jobs). Caps ffmpeg's per-process thread count via the -threads N flag, emitted as a top-level option before -i. Default 0 = ffmpeg auto (uses every available core — pre-v0.5.6 behaviour, unchanged for existing installs). Useful when Parallel Jobs > 1 on older CPUs: without a cap, two libx265 jobs on an 8-core box each spin up 8 threads and fight for cores, eroding throughput. Recommended values: 1–2 for parallel software encodes, 1–2 for NVENC/QSV/VAAPI (the GPU does the heavy lifting, ffmpeg just needs threads for muxing/filters), or leave at auto for a single job saturating a modern many-core CPU. Closes a piece of the "h264 / NVDEC / threads" GitHub feature request.

Changed

Authentication settings UX overhaul. Several users reported locking themselves out by toggling auth without realising it (the Enable checkbox sat in the section header on the far right, low-contrast in dark mode) and being unable to find the toggle again. Three fixes: (1) the Enable toggle moved to the left side of the section, inside a bordered chip with a clear "Enable username / password login" label and an explicit "(Enabled)" / "(Disabled)" badge that turns green when on. (2) Username and password fields now always render — disabled (greyed-out at 0.55 opacity) when auth is off, so users can see what fields exist before flipping the toggle. Pre-v0.5.6 the fields were conditionally rendered, hiding what was about to happen. (3) An auth-active green banner appears under the toggle when auth is on: "Login required. Visitors will need either the username + password below or the API key (workers / scripts)." Makes the state unambiguous.
README: new troubleshooting entry for the lockout case — docker exec sqlite3 one-liners to either disable auth or clear the password hash, no database deletion required. Pre-v0.5.6 users in this situation were nuking data/ to recover.

Docker images

Pinned to this release:

docker pull ghcr.io/i-ial9000/shrinkerr:0.5.6         # portable (amd64 + arm64, CPU)
docker pull ghcr.io/i-ial9000/shrinkerr:0.5.6-nvenc   # x86_64 + NVIDIA GPU (NVENC)
docker pull ghcr.io/i-ial9000/shrinkerr:0.5.6-edge    # as above but ffmpeg master
docker pull ghcr.io/i-ial9000/shrinkerr:0.5.6-edge-nvenc

Floating tags (:latest, :edge, :nvenc, :edge-nvenc) track the most recent release of each lineage.