ls -F |grep -v / | wc -l

ls -lR /path/to/dir/*.jpg | wc -l

find /path/to/directory -mindepth 1 -type f -name "*.mp4" -exec printf x ; | wc -c

$ cd -- "$(mktemp -d)"
$ touch -- -foo.mp4 .bar.mp4 .bat.mp4 'baz.mp4
> ban.mp4'
$ find . -mindepth 1 -type f -name "*.mp4" -exec printf x ; | wc -c
4

$ ls -lR ./*.mp4 | wc -l
3

$ find . -name "*.mp4" | wc -l
5
$ ls -1 *.mp4 | wc -l
ls: invalid option -- '.'
Try 'ls --help' for more information.
0
$ find . -name "*.mp4" | wc -c # Answer fixed at a later time
51
$ find . -name "*.mp4" | wc -l
5
$ find . | grep -i ".mp4$" | wc -l
5
$ ls . | grep ".mp4$" | wc -l
3

ls /path/to/directory | grep ".mp4$"

ls /path/to/directory | grep ".mp4$" | wc -l

ls -lR /path/to/directory | grep ".mp4$" | wc -l

$ find . -name "*.mp4" | wc -l
8

$ find . | grep -i ".mp4$" | wc -l
8

$ find . -name "*.mp4" -type f | wc -l
8

find . -type f | sed 's/.*.//' | sort | uniq -c

cd ~/Videos

ls -la | grep ".mp4" | wc -l