cingg + my ffmpeg5 patches compiles with ffmpeg.git, but all our patches fail to apply... need some rethinking/rebasing

loading vp9 media + seeking + i/o points rendering into mp4 works, resulting file loads.. 

but I guess there will be other (breaking) changes on road to 5.1... 



---------- Forwarded message ----------
From: Андрей Рандрианасулу <randrik@mail.ru>
Date: Tuesday, April 5, 2022
Subject: ffmpeg.git unconditional fixes
To: randrianasulu <randrianasulu@gmail.com>


 
using git up to
 
commit e5189b13827746e57bc1eccc78a5381f646963b9 (grafted, HEAD -> master, origin/master, origin/HEAD)
Author: Paul B Mahol <onemda@gmail.com>
Date:   Mon Mar 28 12:39:05 2022 +0200
 
    avfilter/vf_zscale: fix regression with src/dst_format initialization
--
Андрей  Рандрианасулу