[Libav-user] how to convert NV21 to YUV420P with swscale

[Carl Eugen Hoyos]

Peter Pan <hawkwithwind at ...> writes:

> params.setPreviewFormat(ImageFormat.NV21);

> the code works well if the src image is PIX_FMT_YUYV422, 
> with android camera set to 
> params.setPreviewFormat(ImageFormat.YUY2);

Doesn't this simply indicate that what the camera 
calls "NV21" is not "AV_PIX_FMT_NV21"?

(You really shouldn't use PIX_FMT_*)

Carl Eugen