codec patch file from the above quote and AME 3.0 patch from wangsiji solves my Synology photos transcoding issues, thxs for all your work @wirgen @wangsiji and @dj_nsk for posting the links!
wangsiji AME 3.0 patch i got from here
https://xpenology.com/forum/topic/65643-ame-30-patcher/
now after the codec patch, videos take a longer time to load on mobile and mobile web browser I do not see any delay in pc/tv and also ended up with AAC grayed out in AME 1.0.0-00001 and won't update to 1.0.0-50001