have you also isolated the issue by trying VLC and see if it plays?

Quote: Due to some insoluble problems, while opening some files I get the following error:
"power dvd does not support the playback of this media format"

I have problem opening on2 vp6 and amr in powerdvd but the rest of the players are correctly open.

I also Remove PowerDVD from ffdshow blacklist and set libavcodec decoder on all formats and both 32-bit and 64-bit version was installed.
Please guide me what to do.

Which version of PowerDVD 13 are you using?

Where are you getting the videos that won't play back? Some YouTube vevo files will not play and that is the message that is displayed. Could you post a link to one of the video that you are having trouble with (if it is a public video).

on2 vp6 is a proprietary codec so perhaps Cyberlink is not willing to pay for the license.

I thought that amr was a audio file.

Did you look at the support forms to see if those were listed as playable (regardless of K-Lite). Look here:
http://www.cyberlink.com/products/powerdvd-ultra/spec_en_US.html .
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