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gent2k7
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Joined: 2007-06-25

Has someone managed to get a thumbnail from the current clip with JMF ? As some classes are not present (e.g. FrameGrabbingControl), I'm looking for other ways to do so (is there any way we can get DataSource bit stream ?) [I guess I'm still a newbee with this...]

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Bill Foote

bd-j-dev@mobileandembedded.org wrote:
> Has someone managed to get a thumbnail from the current clip with JMF ?As some classes are not present (e.g. FrameGrabbingControl), I'm looking for other ways (is there any way we can get DataSource bit stream ?) but I guess I'm still a newbee with this...
> [Message sent by forum member 'gent2k7' (gent2k7)]

Sorry, the BDA didn't define a facility to get a thumbnail from
video.

Bill

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gent2k7
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Joined: 2007-06-25

Thanks Bill,
I kinda hoped I could find a way, but Robot (J2SE 1.3) is not available, nor FrameGrabbingControl, so I guess I shall do like everybody else and stock images.

I'm still interested in "hacking" the DataSource object which is a container for AV stream... I guess I'll get into it someday.

Bill Foote

bd-j-dev@mobileandembedded.org wrote:

> I'm still interested in "hacking" the DataSource object which is a container for AV stream... I guess I'll get into it someday.

That shouldn't work... The thing is, in Blu-ray (and in the
other GEM specs), JMF is really just a thin API veneer over
the underlying media pipeline, which is probably implemented
largely in hardware anyway.

In the JMF product for a PC, it's a very different sort of animal -
it's basically a software product that exposes as much of the
internals as it can, including things like the DataSource.

The JMF in Java TV diverged from the PC JMF almost a decade ago.
They still share in common some API-level things for media control,
but the "guts" are completely different, and the ability to get into
the internals of the pipeline on desktop JMF are (intentionally)
absent from Java TV, and therefore Blu-ray, OCAP and the other GEM
platforms.

Bill

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