[Gtkpod-devel] mpeg4ip oddness?

[Peter L. <me...@ca...>]

Hiya,

I've just come across an h264 video file that gtkpod refuses to eat
because mpeg4ip says it's not an MP4 file. iTunes has no problems
loading the file onto my iPod and the pod plays it just fine.

I've added a debug param (MP4_DETAILS_ALL) to the MP4read() call in
mp4file.c:mp4_get_file_info and am getting (apart from a lot of hex
addresses I really don't care about):

ReadChildAtoms: finished stbl
ReadChildAtoms: finished minf
ReadChildAtoms: finished mdia
ReadChildAtoms: finished trak
ReadAtom: pos =3D 0x17aa34
ReadAtom: type =3D udta data-size =3D 27060 (0x69b4)
ReadChildAtoms: of udta
ReadAtom: pos =3D 0x17aa3c
ReadAtom: type =3D =EF=BF=BDreq data-size =3D 28 (0x1c)
Warning: atom type =EF=BF=BDreq is suspect
Read:  data =3D <28 bytes>=20
 00 18 00 0b 51 75 69 63 6b 54 69 6d 65 20 36 2e=20
 30 20 6f 72 20 67 72 65 61 74 65 72=20
ReadAtom: pos =3D 0x17aa60
ReadAtom: type =3D =EF=BF=BDnam data-size =3D 44 (0x2c)
ReadChildAtoms: of =EF=BF=BDnam
ReadAtom: pos =3D 0x17aa68
ReadAtom: type =3D vero data-size =3D 2621443 (0x280003)
ReadAtom: invalid atom size, extends outside parent atom
MP4ERROR: ReadAtom: invalid atom size

Next step for me is to hack up mpeg4ip and see if I can get some more
details out of that, but I'm kinda flailing around in the dark...

Has anyone else come across this or something like it? If so, what to
do?

--=20
Peter Lieverdink   counter.li.org #108200   -37.807478, 144.94465
0x969F3F57   9662 1CB5 8E54 450D 2E12 9D7E 580E 2519 969F 3F57
2.6.20-rc5 #1 Tue Jan 23 18:16:00 EST 2007 amd64 GNU/Linux
cachaca   12:16:22 up 2 days  1:36  6 users  load: 2.53 1.73 1.17