In order to figure out the problem exactly, more detailed information is needed. And your sample file would help us. If you can, in order to test in the most similar conditions to those where you did, please upload your sample file to ftp://test.newin.co.kr or give us your file link to email@example.com.
nPlayer does not support ISO file officially, and you need to try to play a VOB file after extraction of ISO file. We appreciate your suggestion, however, we don't have a plan to support it at this time. Thank you.
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