mp4mux & appsink

[Kristoffer]

Hi Sebastian!

I implemented it similar to filesink (sorry if this  gets strangely formatted):

case GST_QUERY_SEEKING:

gst_query_parse_seeking (query, &format, NULL, NULL, NULL);

if (format == GST_FORMAT_BYTES)
 {
     gst_query_set_seeking (query, GST_FORMAT_BYTES, TRUE, 0, -1);
} else {
    gst_query_set_seeking (query, format, FALSE, 0, -1);
}

And then I added a signal and callback  seek(guint64 offset) which is emitted on a SEGMENT event.

My appsink is basically a custom filesink. I had nothing between mp4mux and the appsink.

/Kristoffer

On Do, 2016-03-24 at 03:32 -0700, Kristoffer wrote:

> I'm trying to add seek support for appsink. But it seems that the appsink
> never receives the SEEKING query from the mp4mux.
>
> Mp4mux claims downstream is not seekable:
>
> qtmux gstqtmux.c:1695:gst_qt_mux_start_file: downstream is not
> seekable
> qtmux gstqtmux.c:1707:gst_qt_mux_start_file: warning: Downstream is
> not seekable and headers can't be rewritten
>
> But I've implemented handling of the seek query and the appsink never even
> receives the query. What can cause this?
What's between your mp4mux and the appsink? And how did you implement
the handling of the SEEK query in appsink, and especially how would you
handle the actual seeking later?

--
Sebastian Dröge, Centricular Ltd · http://www.centricular.com

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