Firefox Video Preloading
VP9 (WebM); preload=none (off); lazy
VP9 (WebM); preload=none (off); eager
VP9 (WebM); preload=metadata (metadata only); lazy
VP9 (WebM); preload=metadata (metadata only); eager
VP9 (WebM); preload=auto (up to browser); lazy
VP9 (WebM); preload=auto (up to browser); eager
VP9 (WebM) with extra keyframes (
-keyint 25
); preload=none (off); lazy
VP9 (WebM) with extra keyframes (
-keyint 25
); preload=none (off); eager
VP9 (WebM) with extra keyframes (
-keyint 25
); preload=metadata (metadata only); lazy
VP9 (WebM) with extra keyframes (
-keyint 25
); preload=metadata (metadata only); eager
VP9 (WebM) with extra keyframes (
-keyint 25
); preload=auto (up to browser); lazy
VP9 (WebM) with extra keyframes (
-keyint 25
); preload=auto (up to browser); eager
H.264 (MP4); preload=none (off); lazy
H.264 (MP4); preload=none (off); eager
H.264 (MP4); preload=metadata (metadata only); lazy
H.264 (MP4); preload=metadata (metadata only); eager
H.264 (MP4); preload=auto (up to browser); lazy
H.264 (MP4); preload=auto (up to browser); eager