Hello all GPAC Coders and Contributors,

Platform: Win10 x64
Release of GPAC where the bug has been observed : since at least dev1.1.0 rev506. tested also 587 and 588 (latest today)
Release known to be working: dev1.1.0 rev447

## Description of the bug
A certain file that can be demuxed with previous versions of Mp4box can not be demuxed anymore, with an error (see below).


## link to the file 
https://www.mediafire.com/file/w4589c5dhn4nivl/DJI_0136.rar/file

## Command line used
"C:\Program Files\StaxRip\Apps\Support\MP4Box\MP4Box.exe" -single 2 -out "C:\Temp\_StaxRip\DJI_0136_temp\ID1 English {DJI.AAC}.m4a" "D:\Downloads\_IDM Downloads\DJI_0136.MP4"

## Error description
[isom] invalid tag size in Xtra !
[isom] not enough bytes in box Xtra: 177 left, reading 536576 (file ..\..\src\isomedia\box_code_base.c, line 12440)
[iso file] Read Box "Xtra" (start 90900445) failed (Invalid IsoMedia File) - skipping
[iso file] Read Box "udta" (start 90900043) failed (Invalid IsoMedia File) - skipping
[iso file] Read Box "moov" (start 90899927) failed (Invalid IsoMedia File) - skipping
Error opening file D:\Downloads\_IDM Downloads\DJI_0136.MP4: Invalid IsoMedia File


DEV: Error demuxing audio with mp4box, dev1.1.0 since rev506, Windows x64
This is a GitHub Issue
repo:gpac
owner:gpac
Title : DEV: Error demuxing audio with mp4box, dev1.1.0 since rev506, Windows x64
Issue date:

--- start body ---
Hello all GPAC Coders and Contributors,

Platform: Win10 x64
Release of GPAC where the bug has been observed : since at least dev1.1.0 rev506. tested also 587 and 588 (latest today)
Release known to be working: dev1.1.0 rev447

## Description of the bug
A certain file that can be demuxed with previous versions of Mp4box can not be demuxed anymore, with an error (see below).


## link to the file 
https://www.mediafire.com/file/w4589c5dhn4nivl/DJI_0136.rar/file

## Command line used
"C:\Program Files\StaxRip\Apps\Support\MP4Box\MP4Box.exe" -single 2 -out "C:\Temp\_StaxRip\DJI_0136_temp\ID1 English {DJI.AAC}.m4a" "D:\Downloads\_IDM Downloads\DJI_0136.MP4"

## Error description
[isom] invalid tag size in Xtra !
[isom] not enough bytes in box Xtra: 177 left, reading 536576 (file ..\..\src\isomedia\box_code_base.c, line 12440)
[iso file] Read Box "Xtra" (start 90900445) failed (Invalid IsoMedia File) - skipping
[iso file] Read Box "udta" (start 90900043) failed (Invalid IsoMedia File) - skipping
[iso file] Read Box "moov" (start 90899927) failed (Invalid IsoMedia File) - skipping
Error opening file D:\Downloads\_IDM Downloads\DJI_0136.MP4: Invalid IsoMedia File


--- end body ---
