[FFmpeg-user] How to resolve conflicting errors in copying stream

[Sub Phil]

>* Executing
*>* ffmpeg -y -i VTS_01_2.VOB -c copy -t 50 VTS_01_2_CUT.VOB
*>>* Leads to this warning
*>* Timestamps are unset in a packet for stream 0. This is deprecated
*>* and will STOP WORKING in the future. Fix your code to set the
*>* timestamps properly
*
This warning should have no relevance to you. (Or
why do you think it is relevant?)

Because: "This is deprecated and will STOP WORKING in the future. Fix
your code to set the timestamps properly"

And I haven't found how to fix it.