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[vdr] Re: Howto get a picture sequence from an I-frame(GOP)
Am Donnerstag, 23. Oktober 2003 17:16 schrieben Sie:
> Hi,
>
> just having this question: Is there an easy way to
> get an jpg picture sequence from an GOP with the _same_
> quality as each picture in the GOP? Clearly if the GOP
> is not closed or not broken the previous GOP is required
> to generate the jpg's for some of the back referenced
> B frames.
>
> Nevertheless exists there lib or program which can be
> used for this?
>
>
> Werner
>
> PS: If this is poosible, then the only thing which is missed
> then for a cutter: a program or lib for generating an
> I-frame(GOP) out of a sequence of jpg pictures ;^)
May be convert (from ImageMagick) does what you want.
I've just converted a vdr-grabbed image with
"convert test.jpg test.m2v"
and the result checked with
"mpeg2dec -v test.m2v"
which gives this output:
mpeg2dec-0.3.2-cvs - by Michel Lespinasse <walken@zoy.org> and Aaron Holtzman
2f SEQUENCE MPEG2 HP@HL 768x576 chroma 384x288 fps 30 maxBps 625000 vbv
229376 picture 768x576 display 768x576 pixel 1x1
37 GOP CLOSED 0: 0: 0: 0
48 PICTURE I fields 2 TFF time_ref 0 offset 0/0 0/0
8b84 SLICE
8b84 END
theNoad
PS: instead of using jpg it may be faster to use raw ppm format
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