jpegenc a theora playbin2 buffer?

[Erik Blankinship]

On Mon, Sep 19, 2011 at 9:06 PM, Erik Blankinship <jedierikb at gmail.com>wrote:

>
>> > I am continuing to have trouble with this.  Most every combination I
>> > try ends up with a distorted image.
>>
>> Distorted in what way? Too narrow/wide? Or every line shifted a bit to
>> the left/right of the previous line?
>>
>
> Here is the original video:
> http://alumni.media.mit.edu/~erikb/tmp/city.ogv
>
> Here is the code I use to extract a pixbuf:
>
>         caps = last_frame.get_caps( )[0]
>         width = int(caps["width"])
>         height = int(caps["height"])
>         r4 = width * 3
>         r4 = (r4 + 3) & ~ 3
>         pixBuf = gtk.gdk.pixbuf_new_from_data( last_frame.data,
> gtk.gdk.COLORSPACE_RGB, False, 8, width, height, r4 )
>
> and here are the results with rowstride set to width * 2:
> http://alumni.media.mit.edu/~erikb/tmp/city_width_x2.png
>
> and with width * 3:
> http://alumni.media.mit.edu/~erikb/tmp/city_width_x3.png
>
> and with width * 4:
> http://alumni.media.mit.edu/~erikb/tmp/city_width_x4.png
>
>
And, rowstride*4, with has_alpha set to True..
http://alumni.media.mit.edu/~erikb/tmp/city_width_x4_alpha.png

which appears to have swapped the red and the blue channels, but at least
looks right!
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