預(yù)滾動

PREROLL The time (usually in seconds) it takes a videotape to get up to speed, i.e. 緩沖時(shí)間(preroll)實(shí)際是在動畫回放前將動畫和音頻調(diào)入用戶緩沖區(qū)所需的一段時(shí)間。

PREROLL The time (usually in seconds) it takes a videotape to get up to speed, i.e., the lapse time between pressing the play button and when the picture appears>2 緩沖時(shí)間(preroll)實(shí)際是在動畫回放前將動畫和音頻調(diào)入用戶緩沖區(qū)所需的一段時(shí)間。緩沖時(shí)間越長，支持的數(shù)據(jù)傳輸速率就越高，因?yàn)楦嗟男畔⒁呀?jīng)輸入到客戶機(jī)的緩沖區(qū)中。

preroll sequencer 預(yù)轉(zhuǎn)定序器