How to identify pinouts of my transformer with (2 +3) wire on primary side and (2+2)wire on secondary side?
For international use, mains transformers would typically accommodate 100VAC/120VAC/240VAC, maybe with 115 or 230VAC, so I would expect the primary taps to reflect that. Hopefully you made note of which tap was appropriate for your region. If you are in a 240V region you can just use the highest voltage tap (typically the highest resistance primary pair that shows continuity). There may be a screen wire, color coded appropriately, that won't show continuity to any of the other windings.  

(That hassle is generally gone now, with the ubiquitous switching power supplies that can accommodate a drooping Japanese 100VAC mains up to a somewhat high 240VAC mains. At most they may require a single switch change.) 

The secondaries should be easy to figure out once you've checked them out with an ohmmeter, and measured the volts once you've applied the correct voltage to the primary. 

I would guess (but not having looked at any DVD player schematics) that there would be a relatively high voltage winding for the motors etc. and a relatively low voltage winding for the analog and digital ASIC circuitry.