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How to seek with a negative rate?

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Markus Becker-2

How to seek with a negative rate?

Hi,
I try to implement fast forward and fast rewind in a C++ application.
Fast forward is no problem, but with fast rewind I get problems:

My code for seeking:

Glib::RefPtr<Gst::Event> event =
Gst::EventSeek::create(-1.0,Gst::FORMAT_TIME,
Gst::SEEK_FLAG_NONE, Gst::SEEK_TYPE_SET, 0,
Gst::SEEK_TYPE_NONE, current_pos);

I use a playbin2 element for playback.

Any hints?

Best regards,
Markus

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Stefan Sauer

Re: How to seek with a negative rate?

Markus Becker schrieb:

> Hi,
> I try to implement fast forward and fast rewind in a C++ application.
> Fast forward is no problem, but with fast rewind I get problems:
>
> My code for seeking:
>
> Glib::RefPtr<Gst::Event> event =
> Gst::EventSeek::create(-1.0,Gst::FORMAT_TIME,
> Gst::SEEK_FLAG_NONE, Gst::SEEK_TYPE_SET, 0,
> Gst::SEEK_TYPE_NONE, current_pos);
>
> I use a playbin2 element for playback.
>

this is not supported by all demuxers yet. What have you been using?

Stefan

> Any hints?
>
> Best regards,
> Markus
>
> ------------------------------------------------------------------------------
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> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
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Markus Becker-2

Re: How to seek with a negative rate?

Am 14.10.2009 17:02 schrieb Stefan Kost:

> Markus Becker schrieb:
>> Hi,
>> I try to implement fast forward and fast rewind in a C++ application.
>> Fast forward is no problem, but with fast rewind I get problems:
>>
>> My code for seeking:
>>
>> Glib::RefPtr<Gst::Event> event =
>> Gst::EventSeek::create(-1.0,Gst::FORMAT_TIME,
>> Gst::SEEK_FLAG_NONE, Gst::SEEK_TYPE_SET, 0,
>> Gst::SEEK_TYPE_NONE, current_pos);
>>
>> I use a playbin2 element for playback.
>>
> this is not supported by all demuxers yet. What have you been using?
>
> Stefan
>

Because of using playbin2 as pipeline, I don't really know (and care)
which demuxer I use.
I tried backward seeking with ogg and mp3 files.
Or do I misunderstand something fundamentally wrong?

Markus

>> Any hints?
>>
>> Best regards,
>> Markus
>>
>> ------------------------------------------------------------------------------
>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>> is the only developer event you need to attend this year. Jumpstart your
>> developing skills, take BlackBerry mobile applications to market and stay
>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>> http://p.sf.net/sfu/devconference
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>
>
>
> ------------------------------------------------------------------------------
> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
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Stefan Sauer

Re: How to seek with a negative rate?

Markus Becker schrieb:

> Am 14.10.2009 17:02 schrieb Stefan Kost:
>
>> Markus Becker schrieb:
>>
>>> Hi,
>>> I try to implement fast forward and fast rewind in a C++ application.
>>> Fast forward is no problem, but with fast rewind I get problems:
>>>
>>> My code for seeking:
>>>
>>> Glib::RefPtr<Gst::Event> event =
>>> Gst::EventSeek::create(-1.0,Gst::FORMAT_TIME,
>>> Gst::SEEK_FLAG_NONE, Gst::SEEK_TYPE_SET, 0,
>>> Gst::SEEK_TYPE_NONE, current_pos);
>>>
>>> I use a playbin2 element for playback.
>>>
>>>
>> this is not supported by all demuxers yet. What have you been using?
>>
>> Stefan
>>
>>
>
> Because of using playbin2 as pipeline, I don't really know (and care)
> which demuxer I use.
> I tried backward seeking with ogg and mp3 files.
> Or do I misunderstand something fundamentally wrong?
>
> Markus
>
>

With ogg its supposed to work. if in doubt check bugzilla and file a
bug. Attach the file if possible.

Stefan

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