[Libav-user] Using ffmpeg with SDL2 - Bad src image pointers / New decoding flow - questions

[Gonzalo Garramuño]

El 05/02/17 a las 12:07, Jan escribió:
> Hello,
>
> Im currently working on a video player software, which should be based 
> on ffmpeg tools and at the moment of writing, using SDL2 for display 
> of the video content.
>
> The documentation for ffmpeg is a bit difficult to get through, as 
> most example code seems to be outdated or using deprecated features.
> The SDL tutorial is also not valid anymore, as well as the updated 
> version on Github or other information which can be found using a 
> search engine of choice.
>
> What am I missing out here, the alignment?
You are missing several things.  First you need to call 
avcodec_receive_frame to get the returned frame after 
avcodec_send_packet.  See the docs for the function and this blog.

https://blogs.gentoo.org/lu_zero/2016/03/29/new-avcodec-api/

Also, you don't need to set anything to writable or check for it. 
Finally, I would look at the code in ffplay.c as it is now compatible 
with sdl2, I believe.

-- 
Gonzalo Garramuño