[FFmpeg-trac] #5178(avformat:new): isom cannot be a MAJOR BRAND in MP4 created from ffmpeg

FFmpeg trac at avcodec.org
Fri Jan 22 15:47:16 CET 2016


#5178: isom cannot be a MAJOR BRAND in MP4 created from ffmpeg
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  richardbushell                     |                   Status:  new
                 Type:  defect       |                Component:  avformat
             Priority:  normal       |               Resolution:
              Version:  unspecified  |               Blocked By:
             Keywords:  mov          |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by richardbushell):

 Interestingly, if I change the brand via MP4Box to:-
 major brand: mp41  (rather than mp42)
 minor version: 0

 THEN I get a Dash Conformance Error:
 http://dashif.org/conformance.html
 Using MPD:  https://living.video/MPD/hotel.mpd

 ERROR AS BELOW:
 ### error: moov-1:trak-1:tkhd-1
 ### 'tkhd' trackWidth must be set to one of (0, (320L << 16))
 ### error: moov-1:trak-1:tkhd-1
 ### 'tkhd' trackHeight must be set to one of (0, (240L << 16))
 Warning: You signal brand MP4v1 and there ImageDescription width must be
 320 not 768
 Warning: You signal brand MP4v1 and there ImageDescription height must be
 240 not 432

 Yet, when I use Major Brand mp42 it results in no error at all.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5178#comment:8>
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