Fwd: doubts about subtitle in Gstreamer

[Ronald S. Bultje-3]

Can someone help this guy?

Ronald

Begin forwarded message:

From: 刘照华 <[hidden email]>
Date: July 9, 2009 11:02:33 PM EDT
To: [hidden email]
Subject: doubts about subtitle in Gstreamer

Dear Ronald,

Firstly, please forgive me for disturbing you.

I have download a .mkv file and the .srt subtitle file.

Now I want to develop a media to show the .srt file on OSD when I play the .mkv file. I have met some questions:

Q: should I use the playbin or subparse element? In playbin, I saw the uri propriety which seems to download the subtitle from Internet.

Q: I see the subparse folder in gst-plugins-base-0.10.22\gst, and this folder has compiled and built, because I can see libgstsubparse_la-gstsubparse.lo has generated. but when I run the gst_element_factory_make to generate element, it returns NULL which makes the error msg printed.

        srtparse = gst_element_factory_make("subparse", "srtparser");
        if(!srtparse)
        {
             printf(" -> Failed to create subparse component\n");
        }

the error also happens even when I change the subparse to ssaparse.

Could you spend a little time to give me some advice?
--
Regards & thanks,
[hidden email]

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