Can you imagine how difficult it must have been in the days of Paganini, and later Ernst, to develop a virtuoso violin technique? Their teachers weren't as accomplished as violin pedagogues are today, who have methods galore from which to choose, and all the difficulties already solved by past masters - and the strings! Where could you buy Dominant strings in those days! The selection of strings must have been terrible, and mostly gut. Was there quality control, like we have today? I doubt it, and yet they had devised these extremely difficult compositions that required perfect execution on what we might think is substandard equipment. Ernst had to follow Paganini and others around Europe in order for him to glean what more advanced players knew, or had developed. They were supreme geniuses, these men, and I think they got most of their superior technique from their own superior imaginations, and from their need. It's given to us almost on a platter.
Why do people try to pretend they’re presenting a live performance when it is patently obvious that there II s a Lt of editing going on? It’s fabulous playing - but come on - don’t try to pawn this off as an unedited live performance because it clearly isn’t. Theo lack of synchronization is extremely obvious.
It's just out of sync. It's pretty common for in recordings for the audio and video to stray apart. I play violin, and I'm no expert but it all looks legit to me!