Properly detect Adobe's .f4v file format as an mp4 ISO compliant file.
diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp
index 4458006..1ff38ee 100644
--- a/media/libstagefright/MPEG4Extractor.cpp
+++ b/media/libstagefright/MPEG4Extractor.cpp
@@ -1540,7 +1540,7 @@
if (!memcmp(header, "ftyp3gp", 7) || !memcmp(header, "ftypmp42", 8)
|| !memcmp(header, "ftypisom", 8) || !memcmp(header, "ftypM4V ", 8)
- || !memcmp(header, "ftypM4A ", 8)) {
+ || !memcmp(header, "ftypM4A ", 8) || !memcmp(header, "ftypf4v ", 8)) {
*mimeType = MEDIA_MIMETYPE_CONTAINER_MPEG4;
*confidence = 0.1;