appsrc with GST_FORMAT_BYTES cannot query duration

[Nicolas Dufresne]

Le samedi 26 mars 2016 à 15:41 -0700, gyunaev a écrit :
> This might also be somehow connected with another issue - appsrc in
> this
> configuration does not respond to gst_event_new_seek() - the seek
> callback
> is simply not called. I use:
> 
>     GstEvent * seek_event = gst_event_new_seek( m_tempoRate,
>                                                 GST_FORMAT_TIME,
>                                                
> (GstSeekFlags)(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE),
>                                                 GST_SEEK_TYPE_SET,
>                                                 pos * GST_MSECOND,
>                                                 GST_SEEK_TYPE_NONE,
>                                                 0 );
> 
> but even when I change it to GST_FORMAT_BYTES, nothing happens.
> Pipeline
> generates no errors, but appsrc's seek_cb is not called, so no seek
> is
> performed. While I can seek directly in appsrc, this doesn't let me
> to
> change tempo, and thus is not suitable for my purpose.

Have you set the stream type to SEEKABLE or RANDOM_ACCESS ? If you use
BYTE format, do you have a demuxer or a parser that will handle the
time to byte conversion ?

> 
> I'm now thinking that I'm probably expecting too much from appsrc,
> and
> should be writing a plugin instead, am I right?
> 
> 
> 
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> .com/appsrc-with-GST-FORMAT-BYTES-cannot-query-duration-
> tp4676539p4676575.html
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