Add support hardware resize for Rockchip

internal/ffmpeg/hardware/hardware.go

@@ -129,6 +129,21 @@ func MakeHardware(args *ffmpeg.Args, engine string, defaults map[string]string)
 
 		case EngineRKMPP:
 			args.Codecs[i] = defaults[name+"/"+engine]
+
+			for j, filter := range args.Filters {
+				if strings.HasPrefix(filter, "scale=") {
+					args.Filters = append(args.Filters[:j], args.Filters[j+1:]...)
+
+					width, height, _ := strings.Cut(filter[6:], ":")
+					if width != "-1" {
+						args.Codecs[i] += " -width " + width
+					}
+					if height != "-1" {
+						args.Codecs[i] += " -height " + height
+					}
+					break
+				}
+			}
 		}
 	}
 }