[FFmpeg-user] Is there a way to set 'closed_gop' in FFmpeg?

[Mark Filipak]

On 04/06/2024 08.04, Paul B Mahol wrote:
 > On Mon, Jun 3, 2024 at 7:19 PM Mark Filipak <markfilipak.imdb at gmail.com>
 > wrote:

 >> Is there a way to set 'closed_gop' in FFmpeg?
 >> Is there a way to set 'closed_gop' for an individual GOP?
 >
 > Not possible, use something more efficient, less buggy and far more useful
 > tooling.

Hmmm... Maybe this isn't so bad...

open Bs
from 1st
segment    I from 2nd segment
   \  \    /
    B  B  I
   _¦__¦_/
  / ¦  ¦
I  B  B

Drop the final open B

    B     I
   _¦____/
  / ¦
I  B

Then 'move' the I-PTS.

    B  I
   _¦_/
  / ¦
I  B

The problem is, what if the physical stream is in DTS-order? In that case, the I-frame has to be 
physically moved. How?