about subtitle file
if you watch the movie from beginning it will be a little bit easy to synchronize the subtitle to the movie by using delay option (even if i don't understand the audio language, the began of subtitle with the began of talking!!)
a- so need option to easy control subtitle +/- using hot keys...(or hot key to show small window with slider and moving pointer at right side of slider will be +, and moving pointer to the left side will be -)
b- during movie it will be advertisement , so need another hot key to pause subtitle time and another hot key to resume subtitle time after end of advertisement
c- if watching movie in the middle then it will be so helpful to have a hotkey to make subtitle time equal to EPG time as reference then fine adjustment by +/-
d- option to auto load subtitle file from folder (name of subtitle file equal to name of event) will be helpful or auto download subtitle file (withe defined language) from subtitle sites like options found in media player classic
This method can be found as subtitle plugins in enigma receivers....
The easiest way of synchronization is to make external audio have time shift bar different than normal time shift!! and we have keys to +/- the audio
it will be better if can be done offline using any translation software you choose.
so we install that software individually and we just put the path to progdvb if the user want to use this option!