Hi Mona, I figured out that the truncation occurs immediately after the very last subtitle in the SRT file. The last spoken word in the movie I posted about occured exactly at the 2:20:51. Then there was 7 minutes 15 seconds of credits at the end of the movie which were completely cut off.
captnvideo
I to have been experiencing this problem with movie conversions. Based on your finding I edited the .srt file for the movie I'm working with to add a line just about 1 second from end of movie and used the new .srt file in the conversion. Your theory is correct, I got a good conversion of the whole movie.