Fix crash when working with invalid file

TechSmith · Mar 18, 2021 · aa06c07 · aa06c07
1 parent 48f0c8c
commit aa06c07
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/mp4file.cpp b/src/mp4file.cpp
@@ -3461,6 +3461,9 @@ const char *MP4File::GetTrackMediaDataName (MP4TrackId trackId)
     MP4Atom *pAtom =
         FindAtom(MakeTrackName(trackId,
                                "mdia.minf.stbl.stsd"));
+    if ( pAtom == nullptr )
+       return nullptr;
+
     if (pAtom->GetNumberOfChildAtoms() != 1) {
         log.errorf("%s: \"%s\": track %d has more than 1 child atoms in stsd", 
                    __FUNCTION__, GetFilename().c_str(), trackId);