User wants YouTube imports capped at FHD: below-FHD sources stay as-is,
above-FHD sources are forcefully downscaled to FHD preserving aspect.
Two layers:
- yt-dlp `-f bv*[height<=1080]+ba/b[height<=1080]/bv*+ba/b` strictly
picks ≤1080 formats when available; falls back to anything otherwise.
- ffmpeg post-process: probeVideoResolution checks output; if >FHD,
add scale='min(1920,iw)':'min(1080,ih)':force_original_aspect_ratio=decrease
to the existing 60fps vfilter chain (no extra encode pass — combined
into the one we already run). trunc(/2)*2 ensures even dims for libx264.
The post-process now triggers when either (fps<60) OR (res>FHD), so a
60fps 4K source that previously skipped re-encoding will now get
downscaled.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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