On 09/12/2011 17:04, Luca Barbato wrote:
On 09/12/11 16:41, Mark Kenna wrote:
On 09/12/2011 14:26, Luca Barbato wrote:
On 09/12/11 13:33, Mark Kenna wrote:
Hi Guys
I'm encoding YUV420p frames to H264 at a fixed size of say 640x480.
Say I had another frame of YUV420p which was only 160x120, is there
any
way that I would be able to copy this frame into the 640x480 and
essentially produce a 4x4 tiled output? I think I would have to loop
over the first two frames, join them line by line, do the same for the
last two images and then splice it together?
Does that sound about right?
Sounds proper, if you have some cycles to throw over it, you might use
avfilter.
lu
I will always have a fixed output resolution. I will be receiving
segments of a 2x2 tiled view which I will need to splice into the main
AVFrame which will be encoded and transmitted.
If AVFilter can do that simply I would love to know more! :)
the overlay filter should let you place them in a quite inefficient
way but sort of easy to grasp.
Still the best is doing the pointer math and memcopy accordingly =)
lu
Maybe I'll start with AVFilter - are there any code samples around? I've
not used it before so a "hello world" would be great!
Thanks for the info!
Mark.
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