v1.0.8-beta.1

[1.0.8-beta.8]

Added

• Transcoding profiles — four Pi‑model‑specific profiles (Pi 2, Pi 3,
  Pi 4, Pi 5) with optimal codec, resolution, framerate, bitrate, H.264
  profile/level, colour depth, and HDR support limits. Profile is
  auto‑detected on first run from /proc/device-tree/model.
• Custom profile mode — allows overriding every transcode parameter
  individually; all profile fields visible in the Web UI, editable only
  when Custom is selected
• Keep Audio global setting — preserves the audio track when enabled
  (stripped by default)
• Profile‑based cached‑video re‑validation — switching profiles
  re‑probes existing cached videos and re‑transcodes any that exceed the
  new limits
• Extended video metadata extraction — ffprobe now captures framerate,
  bitrate, colour depth, H.264 profile/level, and HDR colour info
• Profile‑based optimisation gating — needs_optimisation() checks
  all profile limits (codec, resolution, fps, bitrate, colour depth, HDR,
  H.264 level) instead of only H.264 + resolution
• Web UI Video Optimisation card — profile dropdown with auto‑detect,
  custom parameter fields, keep‑audio checkbox, and global quality/encoder/
  timeout/CPU‑limit controls

Changed

• Transcode encodes to profile target codec — Pi 4/5 target H.265
  (HEVC) for hardware decode; Pi 2/3 target H.264
• Transcode enforces H.264 level/profile — adds -level,
  -profile:v, -refs 2, -bf 0, -g 30 for smooth Pi
  playback
• Transcode framerate cap — -r only applied when source FPS
  exceeds the profile limit; never upscales 30 fps → 60 fps
• Transcode colour depth cap — output depth is min(src, profile);
  never upscales 8‑bit → 10‑bit
• Transcode HDR → SDR downgrade — forces BT.709 colour space on
  non‑HDR‑capable Pi models
• Transcode max bitrate enforcement — -maxrate + -bufsize
  applied from profile limits
• libx265 RAM optimisation — uses ultrafast preset on ≤3 GB
  devices (Pi 4/5 with 2 GB) to avoid OOM; superfast on >3 GB
• CPU throttle default — reduced from 200 % to 100 % (1 core)
• Playlist hot‑reload refreshes metadata — frontend now updates
  width, height, first_frame_path, last_frame_path, and
  cached_path for existing items when the backend updates the
  playlist, fixing aspect‑ratio mismatches and black frame glitches after
  re‑transcode

Fixed

• Next‑item video playback — pressing Next to a video now launches VLC
  immediately instead of sitting on the first frame until the slide timer
  expires
• config.example.json video defaults — playback_enabled
  corrected to true, max_duration_seconds to 0, CPU throttle
  to 100