Viewing the boxes (atoms) of an (f)MP4 file is often necessary to discover bugs and. PS: I am very surprised the Open_Buffer_* is used by so many people, the interface is a bit hidden and I developped it for specific customers, I am happy to see it is used! When I have some free time, I try to make more documentation about this interface + optimization of size of the parsed content. For example the MovieBox (moov) can have multiple TrackBoxes (trak). But the option I provided is a first step. It is on the ToDo-list, but not a priority (paid requests have priority). For small files like yours, MediaInfo is currently not optimized for limiting the size of the parsed content. I expect not to have such issue anymore, but again, this is on big files. You can test with MediaInfo::Option("ParseSpeed", "0") before running the scan, it will reduce the duration of the detection. Show a info if the moov atom is at the beginning of the file (ffmpeg -movflags +faststart) so I can see if the mp4 file starts immediately when I want to stream the Video. The type of this atom this field must be. The number of bytes in this reference movie atom. A reference movie atom may contain the following fields: Size. and last 64kb of the file, whereas the moov atom DROID needs to find to recognise a QT is often found outside of this range. When you open a Quicktime file, you can see the atom structure. Figure 2-55 A 'rmra' atom with multiple 'rmda' atoms. Only one reference movie atom is allowed in a given movie atom. The file size you have is small, so I think the end of the file is hit before the end of the tests. A reference movie atom’s parent is always a movie atom ('moov'). The default configuration of MediaInfo is to read lot of frames in order to detect the GOP and captions hidden in the stream (~300 frames if I remember well). I think you don't have the same problem, the issues is about big files (several GB).
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