mdat atom, and the moov atom only describes the tracks but has
a zero duration.
-Files written with this option set do not work in QuickTime.
This option is implicitly set when writing ismv (Smooth Streaming) files.
@item -movflags separate_moof
Write a separate moof (movie fragment) atom for each track. Normally,
set, only the QuickTime chapter track will be written. Nero chapters can
cause failures when the file is reprocessed with certain tagging programs, like
mp3Tag 2.61a and iTunes 11.3, most likely other versions are affected as well.
+@item -movflags omit_tfhd_offset
+Do not write any absolute base_data_offset in tfhd atoms. This avoids
+tying fragments to absolute byte positions in the file/streams.
+@item -movflags default_base_moof
+Similarly to the omit_tfhd_offset, this flag avoids writing the
+absolute base_data_offset field in tfhd atoms, but does so by using
+the new default-base-is-moof flag instead. This flag is new from
+14496-12:2012. This may make the fragments easier to parse in certain
+circumstances (avoiding basing track fragment location calculations
+on the implicit end of the previous track fragment).
@end table
@subsection Example