Am 31.03.20 um 14:46 schrieb Carl Eugen Hoyos:
Am Di., 31. März 2020 um 02:30 Uhr schrieb Ulf Zibis <ulf.zi...@gmx.de>:

As you can see, I need to increase the ftyp box by 4 bytes to insert CEAP
Didn't you already verify that this is not the culprit?

Well, I only zeroed the 4 Bytes, but didn't shorten the ftyp box by 4 bytes. 
When I shorten it, the indexes in the moov box become invalid.

Anyway, I need to insert the udta box, as it includes the thumbnail for the 
camera to show the video in the selection list, from where I possilbly can 
start it to view.

-Ulf

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