[FFmpeg-devel] Why the tag “DURATION” is a necessity in Matroska files?

[wm4]

On Fri, 16 Jun 2017 02:32:10 +0200
21naown at gmail.com wrote:

> Hello,
> 
> 
> I would like to know why the tag “DURATION” in Matroska files (.mkv) is 
> a necessity? Even mkvmerge lets the choice to use it or not with 
> “--enable-durations”, in addition it is written “Write durations for all 
> blocks. This will increase file size and does not offer any additional 
> value for players at the moment.” (source 
> https://mkvtoolnix.download/doc/mkvmerge.html#d4e535).
> 
> Possibly linked to 
> http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=31852540d4fba0c4e8a16d0b3ddff08fc98e48fd

As far as I'm aware, the linked commit does not do the same thing as
the mkvmerge option you pointed out.