fix: update GOP parameters for mediaAnalyzerGOP and transcode2PassX265 to enhance encoding efficiency and documentation

README.md

@@ -126,7 +126,7 @@ Reads video stream metadata and populates `args.variables` for all downstream pl
 
 **Outputs**: `1` → continue
 
-**Variables set**: `gopKeyint`, `gopMinKeyint`, `isAnimation`, `isMovie`, `vBitrate`, `vMaxRate`, `vBufSize`, `x265Tune`, `videoHeight`, `videoFps`
+**Variables set**: `gopKeyint` (4 s max GOP), `gopMinKeyint` (1 s), `gopSceneCut` (40), `isAnimation`, `isMovie`, `vBitrate`, `vMaxRate`, `vBufSize`, `x265Tune`, `videoHeight`, `videoFps`
 
 ---
 
@@ -237,14 +237,14 @@ Performs 2-pass libx265 encoding using VBV parameters from `args.variables`.
 
 **Outputs**: `1` → transcode complete
 
-**Reads from variables**: `gopKeyint`, `gopMinKeyint`, `vBitrate`, `vMaxRate`, `vBufSize`, `x265Tune`, `audioHasIta`, `audioItaStreamIndex`, `audioItaOpusBitrate`, `audioHasEng`, `audioEngStreamIndex`, `audioEngOpusBitrate`
+**Reads from variables**: `gopKeyint`, `gopMinKeyint`, `gopSceneCut`, `vBitrate`, `vMaxRate`, `vBufSize`, `x265Tune`, `audioHasIta`, `audioItaStreamIndex`, `audioItaOpusBitrate`, `audioHasEng`, `audioEngStreamIndex`, `audioEngOpusBitrate`
 
 ---
 
 ## 🔗 Flow Variable Map
 
 ```
-mediaAnalyzerGOP ──► gopKeyint, gopMinKeyint, vBitrate, vMaxRate, vBufSize
+mediaAnalyzerGOP ──► gopKeyint, gopMinKeyint, gopSceneCut, vBitrate, vMaxRate, vBufSize
                  ──► isAnimation, isMovie, x265Tune, videoHeight, videoFps
                           │
               (optional) setAnimationFlag ──► overrides vBitrate, vMaxRate, vBufSize, x265Tune