[Libav-user] Hardware accelerated decoding

[wm4]

On Thu, 5 Sep 2013 13:53:46 +0300
Oleg <mybrokenbeat at gmail.com> wrote:

> 3. VDA decoded frames could be rendered without copying frame to RAM, using OpenGL. Anyway ffmpeg stores all frames in RAM, so h264_vda decoder copies each frame to RAM that's way h264_vda could be slower then classical h264 decoder.

Just to make sure there's no confusion: h264_vda is a different
interface from h264 + VDA hwaccel. It's true that h264_vda forces
copying video data to RAM. But h264 + hwaccel does not.