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/SKILL.md

@@ -41,7 +41,7 @@ The filters used (for example `scale`, `crop`, `pad`, `hstack`, `vstack`, `selec
 | --- | --- | --- | --- |
 | `RIFE_HOME` | Install folder of rife-ncnn-vulkan (the same folder as its `PATH` entry). Models are read from `%RIFE_HOME%\rife-v4.26`. | Folder path, e.g. `C:\tools\rife-ncnn-vulkan\` | [Stitch-InBetween.ps1](Stitch-InBetween.md) |
 | `UPSCAYL_HOME` | Install folder of upscayl-bin (the same folder as its `PATH` entry). Models are read from `%UPSCAYL_HOME%\models`. | Folder path | [Clone-Image.ps1](Clone-Image.md) with `-Upscale` |
-| `NCNN_GPU_ID` | GPU device passed to the `-g` flag of rife-ncnn-vulkan and upscayl-bin. | `0`, `1`, `2`... (GPU index), `-1` (CPU only) | [Stitch-InBetween.ps1](Stitch-InBetween.md), [Clone-Image.ps1](Clone-Image.md) with `-Upscale` |
+| `NCNN_GPU_ID` | GPU device passed to the `-g` flag of rife-ncnn-vulkan and upscayl-bin. | `0`, `1`, `2`... (GPU index), `-1` (CPU for rife-ncnn-vulkan; upscayl-bin gets no `-g` flag and uses its default device) | [Stitch-InBetween.ps1](Stitch-InBetween.md), [Clone-Image.ps1](Clone-Image.md) with `-Upscale` |
 
 These must be persistent user or system variables. An agent shell may not inherit variables set only in an interactive session.