添加按钮后效果.mp4

Hexdump of first 128 bytes

0000000: 0000 0018 6674 7970 6d70 3432 0000 0000 ....ftypmp42....
0000010: 6973 6f6d 6d70 3432 0005 5b0e 6d64 6174 isommp42..[.mdat
0000020: 0140 2280 a37d 2085 2d2d 2d2d 2d2d 2d2d .@"..} .--------
0000030: 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d ----------------
0000040: 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d ----------------
0000050: 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d ----------------
0000060: 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d ----------------
0000070: 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d ----------------

Hexdump of last 128 bytes

0056925: 0000 00b5 0000 00b6 0000 00ba 0000 00ba ................
0056935: 0000 00b7 0000 00b6 0000 00be 0000 00b6 ................
0056945: 0000 00be 0000 00bb 0000 00ba 0000 00bd ................
0056955: 0000 0034 7374 7363 0000 0000 0000 0003 ...4stsc........
0056965: 0000 0001 0000 0034 0000 0001 0000 0002 .......4........
0056975: 0000 002c 0000 0001 0000 0003 0000 0028 ...,...........(
0056985: 0000 0001 0000 001c 7374 636f 0000 0000 ........stco....
0056995: 0000 0003 0000 0020 0000 755c 0001 d5bb ....... ..u\....