BigThirsty ponybooru.org

vivo smartphone (android device)? I'd recommend either VLC media player https://play.google.com/store/apps/details?id=org.videolan.vlc&hl=en_US or MX Player. Don't usually have a video not play on me unless the hardware wasn't powerful enough to run it. Try downloading the smaller webm of this https://derpicdn.net/img/2019/2/8/1956901/large.webm , and see if that works first before trying the other apps.