change to a shorter vid example

.gitattributes

@@ -34,3 +34,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
 files/videos/B_balloon_IN.mp4 filter=lfs diff=lfs merge=lfs -text
+files/videos/K_0005_IN.mp4 filter=lfs diff=lfs merge=lfs -text

files/videos/{B_balloon_IN.mp4 → K_0005_IN.mp4}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:6f82f82460a368d3afc45dbfa87806a8b2a613d0d82baaff011c0359bf8c72f9
-size 5026185
+oid sha256:9a532ba2738716dbb244e0d7172cf681879218cbbdad09980404fa08ef6b9ecc
+size 3095352