Extraction of Overlay Data from Video File

Mikl michael.yarochkin at timetronics.be
Wed May 10 10:10:54 UTC 2017


Here it is.

But, i am using different container for my subtitles.


From: mudassar [via GStreamer-devel] <ml+s966125n4682970h19 at n4.nabble.com>
Sent: Wednesday, May 10, 2017 11:59:11 AM
To: Michael Yarochkin
Subject: Re: Extraction of Overlay Data from Video File

Hi Miki,

I working on a project where we need to multiplex live subtitles in a live stream and then consume those subtitles on the reader side as metadata. so for this I am working on similar lines as you described.

 However, my application does not generate a playable file. My code translates to following pipeline

uridecodebin ! videoconvert ! video/x-raw format=I420 ! queue ! vp8enc ! mux. appsrc ! application/x-subtitle format={pango-markup, utf8 } stream-type=0 format=3 is-live=true do-timestamp=true ! subparse ! kateenc category=SUB ! queue ! mux. webmmux name=mux ! queue ! filesink

I tried replacing webmmux with matroskamux but with no success.

I also get this warning sometimes: <subparse> could not convert string from 'UTF-8' to UTF-8: Invalid byte sequence in conversion input

It might help if you could share your code which seams to be doing similar thing.


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