[jjd-uk]

While we are grateful to quietvoid for taking the time and effort, this is still something that will need need to be submitted to the ffmpeg devs and accepted by them. Some behind the scene initial discussion indicates that it wouldn't be acceptable to the ffmpeg devs in it's present form so would need some work to be so, thus as our devs are busy getting v19 into an RC state this is simply not going to happen for v19.

If someone else wants to take this on to quicken this up then they are free to do so, as thanks to quietvoid the specific code changes are now freely available in the public domain.