Bug fix #35143

Animplayer treated .tif extensions as movie files, so that didn't work.
Added another hardcoded check for it, like for png tga exr jpg etc.

Why FFmpeg thinks .tif is a movie... that's for another day :)
Quicktime QTKit did same btw.

source/blender/imbuf/intern/util.c

@@ -297,6 +297,7 @@ static int isffmpeg(const char *filename)
 	    BLI_testextensie(filename, ".dds") ||
 	    BLI_testextensie(filename, ".tga") ||
 	    BLI_testextensie(filename, ".bmp") ||
+	    BLI_testextensie(filename, ".tif") ||
 	    BLI_testextensie(filename, ".exr") ||
 	    BLI_testextensie(filename, ".cin") ||
 	    BLI_testextensie(filename, ".wav"))

source/blender/quicktime/apple/qtkit_import.m

@@ -94,6 +94,8 @@ int anim_is_quicktime(const char *name)
 	    BLI_testextensie(name, ".png") ||
 	    BLI_testextensie(name, ".bmp") ||
 	    BLI_testextensie(name, ".jpg") ||
+	    BLI_testextensie(name, ".tif") ||
+	    BLI_testextensie(name, ".exr") ||
 	    BLI_testextensie(name, ".wav") ||
 	    BLI_testextensie(name, ".zip") ||
 	    BLI_testextensie(name, ".mp3"))

source/blender/quicktime/apple/quicktime_import.c

@@ -200,6 +200,8 @@ int anim_is_quicktime(const char *name)
 	    BLI_testextensie(name, ".png") ||
 	    BLI_testextensie(name, ".bmp") ||
 	    BLI_testextensie(name, ".jpg") ||
+	    BLI_testextensie(name, ".tif") ||
+	    BLI_testextensie(name, ".exr") ||
 	    BLI_testextensie(name, ".wav") ||
 	    BLI_testextensie(name, ".zip") ||
 	    BLI_testextensie(name, ".mp3"))