Thank you for your replay Frank.
I tried few quicktime versions (7.6.9, 7.7.3, 7.74), installed Avid Codecs (PE&LE). tried from another version of Avid newscutter (9.5.3.6) , no luck 🙁
This workflow works for me only on media format that is DnxHD or DV25. But that’s no good for me.