[Ffmpeg-devel] [PATCH] Add moving images feature toimlib2vhook

[Víctor Paesa]

> Hi
>
> On Mon, Nov 06, 2006 at 07:41:28PM +0100, V?ctor Paesa wrote:
>> Hi,
>> >> Hi,
>> >>
>> >> On 11/3/06, V?ctor Paesa <wzrlpy at arsystel.com> wrote:
>> >>> > Hi
>> >>> >
>> >>> > On Thu, Nov 02, 2006 at 11:11:33PM +0100, V?ctor Paesa wrote:
>> >>> >
>> >>> > may i suggest that you use libavcodec/eval.c for calculating the
>> >>> position
>> >>> > based on the frame number, that way a simple -x 100+5.3*n will
>> work
>> >>> and
>> >>> > less sane things like -x 100+100*sin(n/100) will work too
>> >>> >
>> >>>
>> >>> Brilliant idea, it makes possible to do nice "natural" movements,
>> >>> rising sun, flying birds, parabolics, ... :-)
>> >>>
>> >>> I'll try it, so far I've seen an example of using eval at the rate
>> >>> control
>> >>> code, but would it be possible that some knowlegeable person add
>> some
>> >>> Doxigen comments to eval.h ?
>> >>
>> >> Should be done now, thanks to Michael.
>> >
>> > Great, thanks.
>> >
>>
>> Here is the revised patch:
>>
>> You may test it with a bulb flying in a Lissajous pattern:
>>
>> ffmpeg -i input.avi -vhook \
>> 'vhook/imlib2.dll
>> -x W*(0.5+0.25*sin(N/47*PI))-w/2
>> -y H*(0.5+0.50*cos(N/97*PI))-h/2
>> -i /usr/share/imlib2/data/images/bulb.png'
>> -acodec copy -sameq output.avi
>
> patch looks ok (minus the trailig whitespace and a small cosmetic here
> and there)
>
Sorry, in this version I removed the trailing spaces, and hopefully also
the cosmetics.

Regards,
V?ctor
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