Ib nyuag saib CBR qhov chaws nyob hauv cov suab
C onstant B nws R noj yog ib qho kev siv tus txheej txheem uas ceev tus nqi me ntsis tib yam li qhov tsis txaus siab rau VBR uas nws txawv me ntsis. CBR txheej txheem suab sai tshaj VBR vim nws qhov nqi me ntsis nqi. Lub downside rau ib ntsis nqi yog tias cov ntaub ntawv uas ua yog tsis optimized zoo thiab cia ua VBR. Piv txwv, yog tias muaj ib qho chaw nyob ntsiag to ntawm cov suab paj nruag uas tsis tas yuav tsum tau them tus nqi kom zoo dua ces CBR tseem yuav siv cov nqi qub - yog li qhov chaw khaws tseg cia. Tib yam muaj tseeb rau cov suab nyuaj; Yog hais tias tus nqi tsawg tsawg ces zoo yuav txom nyem.