A lively live (yesterday) performance of the Mendelssohn Violin concerto with Veronika Eberle and the Bamberg Symphony conducted by Edward Gardner (as part of the Bad Kissingen summer festival.) It starts partway through the performance which starts with the Anton Weber Passacaglia and ends with the Brahms 4th Symphony. I don't know how long it will be available on YouTube (since it was a live broadcast):
From 2013, an outstanding performance of the Tchaikovsky Violin concerto by Julia Fischer; even though the video is fairly low resolution, it was fun watching for the many closeups of her playing.