seeking video file with background

[Felipe Mogollon]

Hi

I am trying a build an applicaction that mixes two diferent videos and
shows them with a background image following the next pipeline:

gst-launch filesrc location=video1.ogg ! decodebin !  videobox
border-alpha=0 alpha=1 top=-375 bottom=0 left=-250 right=0 ! alpha
method=3 angle=90 ! videomixer name=mixer ! ffmpegcolorspace !
xvimagesink filesrc location=video2.ogg ! decodebin ! videobox
border-alpha=0 alpha=1 top=-375 bottom=0 left=-400 right=0 ! alpha
method=3 angle=90 ! mixer. filesrc location=background.jpg ! decodebin
! imagefreeze !  alpha method=0 target-r=0 target-g=0  target-b=0 !
videoscale ! video/x-raw-yuv, width=1200, height=800 ! mixer.


When I try to seek the videos, I am always getting a seek error, I
think that the error appears because of the still image that is
created to be used as background, I have tried with multifilesrc and
with imagefreeze, but I always get that seek error.

Does anybody knows another way to get a static background image that
can be seekable?

Thanks in advance.

Regards.


Felipe.

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[Kapil Agrawal]

Not sure but just a thought,

Maybe you can apply seeking on the video part of pipeline and not on the whole pipeline.
So make a video bin having the video part before mixing and seek there ?

Note :Just an idea, havent validated or thought much about practical issues :)

Thanks
Kapil

2010/5/28 Juan Felipe Mogollón Rodríguez <[hidden email]>

Hi

I am trying a build an applicaction that mixes two diferent videos and
shows them with a background image following the next pipeline:

gst-launch filesrc location=video1.ogg ! decodebin !  videobox
border-alpha=0 alpha=1 top=-375 bottom=0 left=-250 right=0 ! alpha
method=3 angle=90 ! videomixer name=mixer ! ffmpegcolorspace !
xvimagesink filesrc location=video2.ogg ! decodebin ! videobox
border-alpha=0 alpha=1 top=-375 bottom=0 left=-400 right=0 ! alpha
method=3 angle=90 ! mixer. filesrc location=background.jpg ! decodebin
! imagefreeze !  alpha method=0 target-r=0 target-g=0  target-b=0 !
videoscale ! video/x-raw-yuv, width=1200, height=800 ! mixer.


When I try to seek the videos, I am always getting a seek error, I
think that the error appears because of the still image that is
created to be used as background, I have tried with multifilesrc and
with imagefreeze, but I always get that seek error.

Does anybody knows another way to get a static background image that
can be seekable?

Thanks in advance.

Regards.


Felipe.

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twitter handle: @gst_kaps
http://www.linkedin.com/in/kapilagrawal

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[Felipe Mogollon]

Hi Kapil, many thanks for your answer.

Finally I got it running:

I made a

gst_element_seek_simple (pipeline, GST_FORMAT_TIME,
(GstSeekFlags)(GST_SEEK_FLAG_FLUSH ),
             position * GST_SECOND );

and everything was OK.

I was trying to perform a GST_FORMAT_PERCENT seek but it did'nt worked.

Regards.

Felipe




On Fri, May 28, 2010 at 4:20 PM, Kapil Agrawal <[hidden email]> wrote:

> Not sure but just a thought,
>
> Maybe you can apply seeking on the video part of pipeline and not on the
> whole pipeline.
> So make a video bin having the video part before mixing and seek there ?
>
> Note :Just an idea, havent validated or thought much about practical issues
> :)
>
> Thanks
> Kapil
>
> 2010/5/28 Juan Felipe Mogollón Rodríguez <[hidden email]>
>>
>> Hi
>>
>> I am trying a build an applicaction that mixes two diferent videos and
>> shows them with a background image following the next pipeline:
>>
>> gst-launch filesrc location=video1.ogg ! decodebin !  videobox
>> border-alpha=0 alpha=1 top=-375 bottom=0 left=-250 right=0 ! alpha
>> method=3 angle=90 ! videomixer name=mixer ! ffmpegcolorspace !
>> xvimagesink filesrc location=video2.ogg ! decodebin ! videobox
>> border-alpha=0 alpha=1 top=-375 bottom=0 left=-400 right=0 ! alpha
>> method=3 angle=90 ! mixer. filesrc location=background.jpg ! decodebin
>> ! imagefreeze !  alpha method=0 target-r=0 target-g=0  target-b=0 !
>> videoscale ! video/x-raw-yuv, width=1200, height=800 ! mixer.
>>
>>
>> When I try to seek the videos, I am always getting a seek error, I
>> think that the error appears because of the still image that is
>> created to be used as background, I have tried with multifilesrc and
>> with imagefreeze, but I always get that seek error.
>>
>> Does anybody knows another way to get a static background image that
>> can be seekable?
>>
>> Thanks in advance.
>>
>> Regards.
>>
>>
>> Felipe.
>>
>>
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>>
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>> [hidden email]
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
>
> --
> www.mediamagictechnologies.com (Gstreamer, ffmpeg, Red5, Streaming)
> twitter handle: @gst_kaps
> http://www.linkedin.com/in/kapilagrawal
>
> ------------------------------------------------------------------------------
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>

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