Change NCNN_GPU_ID=-1 handling in Clone-Image.ps1 to omit upscayl-bin -g flag instead of passing -1 (which the tested build rejects), update documentation across Clone-Image.md, SKILL.md, README.md and index.md to clarify -1 means CPU for rife-ncnn-vulkan but default device for upscayl-bin, wrap Get-SrtContent calls in Create-FullSubtitle.ps1 with @() array operator to ensure Count property exists when parsing returns single entry, fix Get-FramesRange.ps1 output directory resolution to use Resolve-Path before

video-processing-scripts/Clone-Image.md

@@ -188,7 +188,7 @@ The output format is selected from the `-Target` file extension. Each format has
 - AVIF output uses `libaom-av1` with `-still-picture 1` and `-cpu-used 4` for a reasonable speed/quality tradeoff. Your ffmpeg build must include `libaom-av1` for `.avif` output to work.
 - `-Metadata` toggles ffmpeg's `-map_metadata 0` (copy) vs `-map_metadata -1` (strip). Which metadata actually survives the conversion depends on what the source and target formats can carry.
 - `-LTX` only takes effect when `-Size` is `HD`, `1080p`, `720p` or `480p`. Combining it with any other `-Size` value (or omitting `-Size`) is rejected with an explicit error so the user is never silently downgraded to the regular preset.
-- `-Upscale` runs `upscayl-bin.exe` **before** ffmpeg. The script validates that `upscayl-bin.exe` is on PATH, that `UPSCAYL_HOME` is set and exists, that the `models` subfolder and the requested `<Model>.bin` / `<Model>.param` files are present, and that `NCNN_GPU_ID` is set to a valid integer (`-1` for CPU, `0+` for GPU). The intermediate upscaled PNG is created under `%TEMP%` and deleted after the run (including on ffmpeg failure).
+- `-Upscale` runs `upscayl-bin.exe` **before** ffmpeg. The script validates that `upscayl-bin.exe` is on PATH, that `UPSCAYL_HOME` is set and exists, that the `models` subfolder and the requested `<Model>.bin` / `<Model>.param` files are present, and that `NCNN_GPU_ID` is set to a valid integer (`0+` for a GPU index; `-1` omits the `-g` flag, so upscayl-bin uses its default device, which is not necessarily the CPU). The intermediate upscaled PNG is created under `%TEMP%` and deleted after the run (including on ffmpeg failure).
 - `-Keep` saves the raw upscayl output (no cropping/scaling). When the `-Keep` extension is `.png`, the temp file is copied directly (no re-encode); for any other supported extension a separate ffmpeg invocation converts the PNG to the requested format with default quality settings (JPEG `-q:v 2`, WEBP `-quality 90`, AVIF `-crf 25`). `-Keep` is ignored with a warning if `-Upscale` is not specified.
 
 ### Notes