[gst-devel] A question for avimux in gstreamer
Zhang Yanlong-PBVM47
PBVM47 at motorola.com
Tue May 13 02:30:11 CEST 2008
Mark,
Yes, it works well.
Very thanks for your helps.
BRs
Zhang Yanlong
-----Original Message-----
From: Mark Nauwelaerts [mailto:manauw at skynet.be]
Sent: Tuesday, May 13, 2008 6:21 AM
To: Zhang Yanlong-PBVM47
Cc: gstreamer-devel at lists.sourceforge.net
Subject: Re: [gst-devel] A question for avimux in gstreamer
There is indeed a bit of a bug there in avimux, as already noted in
http://bugzilla.gnome.org/show_bug.cgi?id=511489
A patch given there addresses it pretty much the way you indicate.
Regards,
Mark.
Zhang Yanlong-PBVM47 wrote:
> Pals,
> I have a question for avimux in gstreamer.
>
> Pls look through the function "gst_avi_mux_audsink_set_caps" in file
> "gstavimux.c"
> There are following lines at the end of this function:
>
> *avipad->parent.hdr.rate = avipad->auds.blockalign *
avipad->auds.rate;*
> avipad->parent.hdr.samplesize = avipad->auds.blockalign;
> avipad->parent.hdr.scale = 1;
>
> My question is that why the program does "*avipad->auds.blockalign *
> avipad->auds.rate*" when calculating *avipad->parent.hdr.rate*.
>
> When I playback a avifile which is generated by gstreamer avimux
> (YUV420 video data and PCM audio data <depth: 16, width: 16, 2
> channels>), the time lapsesvery slowly on player (Windows media
> player). The time progress bar just passes 1 second but the real time
passes 4 seconds.
>
> If I change the code to "*avipad->parent.hdr.rate =
> avipad->auds.rate;*", the file is played well.
>
> So I am not sure if there is some problem at this point.
>
> Thanks a lot.
>
> BRs
> Zhang yanlong
> **
>
>
>
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