Break if media headers are corrupt. fix #1828

12 years ago · 52163428e9
1 changed files with 4 additions and 0 deletions
--- a/libs/enzyme/mp4.py
+++ b/libs/enzyme/mp4.py
@ -284,6 +284,10 @@ class MPEG4(core.AVContainer):

                    while datasize:
                        mdia = struct.unpack('>I4s', atomdata[pos:pos + 8])
+
+                        if mdia[0] == 0:
+                            break
+
                        if mdia[1] == 'mdhd':
                            # Parse based on version of mdhd header.  See
                            # http://wiki.multimedia.cx/index.php?title=QuickTime_container#mdhd