Thanks Tony. Perhaps it's a pre-PS23 feature.

According to MediaInfo:

In the first attachment, there is a view of an audio clip which has not been split. You will see that the audio spectrum is grey out. When the clip is split (2nd attachment) you will see that the clip downstream of the cut continues to have the audio spectrum greyed out but upstream, its not and can be viewed clearly.  Why does this ...

Hardware acceleration is set ti ''None''. I'll try CUDA later as you have suggested.   Thanks.

Hi Tony,   You can watch the file. However, it's not possible to import it into Studio 21 UNLESS it is ''massaged'' using Handbrake and even then, editing in Studio 21 can only happen as described above. The destination is Las Vegas! 

I had to remake the non-Handbrake version and it's here: https://youtu.be/f927O5CHKSw    

Hi Tony, Mediainfo  on the (used) Handbrake Version. The non-Handbrake version could  be imported but appeared as a green screen with coloured lines at the top on playback..: General CompleteName : K:\Globe to Mgm Grand-1.mp4 Format/String : MPEG-4 Format_Profile : Base Media / Version 2 CodecID/String : mp42 ...

A ''VLC video'' should really read a ''video playable by VLC Media Player''.

Hi Tony, For a 35 sec Google Earth Pro Movie Maker video massaged through Handbrake and Imported on to the time line of PS 21 Ult, it took approx 2 - 2.5 hours to render before any kind of editing could be done. The entire video was approx 180s long. There was no Yellow bar converting to Green bar converting to default bar. If the clip was ...