fix #3610

Author: CasualPokePlayer

src/BizHawk.Client.Common/movie/PlatformFrameRates.cs

@@ -19,9 +19,9 @@ public static class PlatformFrameRates
 			["NES_PAL"] = 50.006977968268290849,
 			["FDS"] = 60.098813897440515532,
 			["FDS_PAL"] = 50.006977968268290849,
-			["SNES"] = 21477272.0 / (4 * 341 * 262), // 60.098475521
+			["SNES"] = 21477272.0 / (4 * 341 * 262 - 2), // 60.0988118623
 			["SNES_PAL"] = 21281370.0 / (4 * 341 * 312), // 50.0069789082
-			["SGB"] = 21477272.0 / (4 * 341 * 262), // 60.098475521
+			["SGB"] = 21477272.0 / (4 * 341 * 262 - 2), // 60.0988118623
 			["SGB_PAL"] = 21281370.0 / (4 * 341 * 312), // 50.0069789082
 			["PCE"] = 7159090.90909090 / 455 / 263, // 59.8261054535
 			["PCECD"] = 7159090.90909090 / 455 / 263, // 59.8261054535