[FFmpeg-user] Encoding VP6a (How do I use this patch in linked thread?)

[Lou]

On Fri, 11 Sep 2015 09:19:42 -0700 (PDT)
byarsulik <bobby.yarsulik at tvh.com> wrote:

> Hello all,
> 
> I am doing a project at work where I need to put a transparent flash video
> on our website. I am trying to encode the file, and I've turned to ffmpeg to
> do the job. However, I read everywhere that it isn't possible to "encode"
> VP6a with ffmpeg but only to decode with it.
> 
> I ran across this thread, and it looks like this may be able to help me.
> Although, I do not know the process required to use this patch file, as I've
> never done it before. I wondered if someone who has done this previously
> might be able to step me through the process?
> 
> Here is the thread in question:
> http://ffmpeg-users.933282.n4.nabble.com/no-encoding-of-VP6-flv-files-td4354603.html

It has been comitted in 42ae83c1 on 5 Feb 2012. It allows muxing of
VP6a into flv. I believe there is no VP6a encoder. Patch welcome.