Advancing or Delaying the subtitle display

[Nicolas Dufresne]

Le mardi 27 mars 2018 à 05:29 -0700, DeepakRohan a écrit :
> Hi,
> 
>      I have a task of advancing or delaying the subtitle content that
> is
> being overlayed on the Video data.
> I wanted to know if there is any way by which we can achieve this in
> gstreamer, other than modifying the subtitle buffers timestamps.
> Say like updating a property of a element in pipeline which does the
> advancing/delaying automatically.

I believe you could play with the pad offset (see
gst_pad_set_offset()), but haven't tests such a solution myself.

> 
> Note:
> By advancing I mean that the subtitle that was supposed to be
> displayed at
> say 15 second of the playback, should be displayed at 12th second -
> This is
> advancing by 3 seconds.
> By delaying I mean that the subtitle that was supposed to be
> displayed at
> say 15 second of the playback, should be displayed at 18th second -
> This is
> delaying by 3 seconds.
> 
> Please let me know how to proceed on this.
> 
> Thanks in Advance.
> Rohan
> 
> 
> 
> --
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