Windows 7: some dvd's can't play on sony dvd player but they play on onida player

hi guys....please someone help me..i brought a dvd i put that on my sony DAV-DZ340K dvd player but it can't playable on that but it's plays on onida dvd player please help me how can i play it on DAV-DZ340K.

According to Sony, the following discs are compatible (for playback) with the DAV-DZ340K: CD-R/CD-RW and DVD-R/+R/+R DL/+RW/-RW/-RW. There's also a notation that "Some discs may not be played back." I'm guessing that even if a disc is listed, some manufacturing processes may not be compatible with the playback function in the DAV-DZ340K.

DAV-DZ340K : DVD Home Theatre System : Home Theatre System : Sony India

If you're using a remote to try to play the DVD, according to Sony, no remote codes are currently available online for the DAV-DZ340K. Remote codes are often listed in the product manual, so it is recommended you check there.
Note: If this remote came with another Sony product (e.g. TV, DVD, etc...), the remote codes may be listed in the manual for that product.

thanks for ur replay......and actually that dvd is DVD-R still it's not play on my dvd player

In doing some more research, I found out that every DVD has a 4 digit code at the beginning of the disc called a "book type". Many devices will use this code to determine how the disc should be treated. One common cause of compatibility problems is the failure of a device to recognize the book type of the disc.

Book type - Wikipedia, the free encyclopedia

And apparently this compatibility problem goes back several years. I found another forum thread from 2007 where some DVDs won't play in a Toshiba but will play in a Sony.

DVDs won't play in some players - Home Theater Forum and Systems - HomeTheaterShack.com