[FFmpeg-user] How to compress .MOV file compatible to Canon camera

Carl Eugen Hoyos ceffmpeg at gmail.com
Wed Apr 1 01:47:01 EEST 2020

Am Mi., 1. Apr. 2020 um 00:45 Uhr schrieb Ulf Zibis <Ulf.Zibis at gmx.de>:

> Am 31.03.20 um 01:02 schrieb Carl Eugen Hoyos:
> > But the relevant test - imo - is not to change the file that does not play
> > but instead change the playing file and find out which change breaks
> > playback.
> >
> > You can overwrite each atom name with "free" and the file stays a
> > valid (but possible unplayable) isom/mp4/mov file.
> I now have overwitten "udta" with "free" in the original video.

What happens if you instead only overwrite (some of) its content?

(Which part of the udta atom is needed or is it sufficient if there
is one?)

Carl Eugen

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