In　recent　years,　multimedia　service　providers　have　been　focusing　on　improving　the　users　quality　of　experience　(QoE)　of　audiovisual　services.　To　examine　the　factors　that　affect　QoE　efficiently,　we　explore　models　to　reflect　the　quantitative　relationship　between　influential　factors　and　QoE.　We　carry　out　a　series　of　subjective　quality　tests　to　investigate　the　effects　of　audiovisual　and　subtitle　synchronization,　and　playback　buffering　under　a　limited　transmission　bandwidth,　on　perceived　quality.　We　analyze　statistics　and　propose　an　analytical　model　to　determine　the　quantitative　relationship　between　the　aforementioned　factors　and　perceived　audiovisual　quality.　The　proposed　model　is　content-dependent　and　can　monitor　QoE　when　delivering　multimedia　data　through　a　dynamic　network.　Therefore,　it　is　capable　of　providing　more　accurate　guidance　for　improving　audiovisual　transmission　services.　©　2019　IEEE.