| MPEG-4
???c khai tr??ng b?i MPEG (MovingPictureExportsGroup) trong
n?m 1999 l? ?n b?n ??u ti?n v? ???c ch?nh th?c tuy?n b? ???c
c?c ti?u chu?n qu?c t? v?o ??u nh?ng n?m 2000. N? kh?c v?i r?t
nhi?u t? c? hai MPEG-1 v? MPEG-2. MPEG-4 n?i dung ?a ph??ng
ti?n ti?p c?n c?c c?ng c? d?a tr?n d? li?u v? c?c ch?c n?ng
ch?nh s?a cho c?c ho?t ??ng v? ch?t d?ng n?i dung ?? ng??i
d?ng c?ch kh?c c? th? nh?n ???c c?c m?c t??ng ??i v? mua s?m
nh? t??ng t?c. V?i c?ng ngh? ho?n h?o th? h? ??u ti?n c?a
video-m? ho? l? c?ng ngh? c?t l?i v? c?ng ngh? ch? ch?t kh?c
nh? ph?n kh?c ??i t??ng video, Video Object m? h?a, kh? n?ng
m? r?ng, chuy?n ??ng v? d? to?n b?i th??ng, n? tr? n?n r?ng
r?i v? an to?n ???c ?p d?ng tr?n internet.
ASF l? Advanced Streaming Format. N? l?
m?t ??nh d?ng t?p tin m? r?ng ph?t tri?n ??ng b? ch? y?u ??
l?u tr? video k? thu?t s?, ?m thanh, d?ng ph? ??, ho?c truy?n
d? li?u tr?n internet. ASF c?ng l? m?t container ?a ph??ng
ti?n c?a Windows Media Video hay Windows Media
Audio.
?? chuy?n ??i mpeg4 v?o t?p tin asf: C?c
th?ng ch?a nh? mp4, mov, avi, rm, mkv, ogm divx h? tr? mpeg-4
d?ng. h?y c?i ??t c?c b? l?c video th?ch h?p v? b? l?c ?m
thanh cho c?c ??nh d?ng mpeg4 nh? ffdshow, divx, xvid, HDX4 codec, ho?c
MainConcept b? gi?i m?.
Download ASF
Chuy?n ??i n? c? th? chuy?n ??n t?p tin mpeg4 asf. Ch?n
m?t file mpeg4, chuy?n ??i c?c ??nh d?ng ??u ra ?? ASF trong
h?p tho?i Options, c?u h?nh m?t s? th?ng s? nh? m? h?a video
bitrate,bitrate m? h?a ?m thanh, ?? ph?n gi?i, t? l? khung
h?nh, vv n?u c?n thi?t.
M4V l? mpeg-4 video. mp4 video
??i khi s? d?ng c?c t?p tin ho?c nh?nh mp4v *.. IPod ho?c
iTune s? d?ng lo?i ??nh d?ng. ?? chuy?n ??i m4v ?? asf h?y c?i
??t c?c codec m4v. N?u t?p tin l? pretected ho?c m?t
m?, chuy?n ??i s? th?t b?i.
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