Change video uploads to always be converted to H264/MP4 (#13220)
Change video uploads to always be converted to H264/MP4 (#13220)

Even if the container format is the same (.mp4), the codec could
be different and not playable in web browsers
Nyoho/mastodon,h3zjp/mastodon,abcang/mastodon,Ryanaka/mastodon,tri-star/mastodon,yukimochi/mastodon,glitch-soc/mastodon,lindwurm/mastodon,musashino205/mastodon,Ryanaka/mastodon,ikuradon/mastodon,danhunsaker/mastodon,cobodo/mastodon,im-in-space/mastodon,koba-lab/mastodon,Nyoho/mastodon,gol-cha/mastodon,h3zjp/mastodon,kirakiratter/mastodon,Nyoho/mastodon,tootsuite/mastodon,masto-donte-com-br/mastodon,Kirishima21/mastodon,yukimochi/mastodon,abcang/mastodon,tri-star/mastodon,koba-lab/mastodon,ykzts/mastodon,im-in-space/mastodon,tri-star/mastodon,glitch-soc/mastodon,yi0713/mastodon,musashino205/mastodon,abcang/mastodon,lynlynlynx/mastodon,Kirishima21/mastodon,tri-star/mastodon,lynlynlynx/mastodon,imas/mastodon,MitarashiDango/mastodon,gol-cha/mastodon,cobodo/mastodon,im-in-space/mastodon,primenumber/mastodon,primenumber/mastodon,theoria24/mastodon,tootcafe/mastodon,Ryanaka/mastodon,rainyday/mastodon,lindwurm/mastodon,MitarashiDango/mastodon,pinfort/mastodon,musashino205/mastodon,tootsuite/mastodon,pinfort/mastodon,Kirishima21/mastodon,maa123/mastodon,yukimochi/mastodon,glitch-soc/mastodon,cobodo/mastodon,pinfort/mastodon,ykzts/mastodon,MitarashiDango/mastodon,primenumber/mastodon,yi0713/mastodon,lynlynlynx/mastodon,theoria24/mastodon,maa123/mastodon,rainyday/mastodon,im-in-space/mastodon,glitch-soc/mastodon,ikuradon/mastodon,lindwurm/mastodon,danhunsaker/mastodon,lynlynlynx/mastodon,h3zjp/mastodon,imas/mastodon,kirakiratter/mastodon,abcang/mastodon,koba-lab/mastodon,cobodo/mastodon,ikuradon/mastodon,kirakiratter/mastodon,ikuradon/mastodon,primenumber/mastodon,tootcafe/mastodon,Ryanaka/mastodon,tootsuite/mastodon,yi0713/mastodon,imas/mastodon,ykzts/mastodon,yi0713/mastodon,h3zjp/mastodon,masto-donte-com-br/mastodon,theoria24/mastodon,maa123/mastodon,musashino205/mastodon,imas/mastodon,tootcafe/mastodon,danhunsaker/mastodon,ykzts/mastodon,rainyday/mastodon,koba-lab/mastodon,MitarashiDango/mastodon,masto-donte-com-br/mastodon,kirakiratter/mastodon,pinfort/mastodon,gol-cha/mastodon,yukimochi/mastodon,rainyday/mastodon,maa123/mastodon,masto-donte-com-br/mastodon,Nyoho/mastodon,danhunsaker/mastodon,gol-cha/mastodon,tootcafe/mastodon,Kirishima21/mastodon,theoria24/mastodon,tootsuite/mastodon,lindwurm/mastodon