| DAT l? m?t
t?p tin VCD gia h?n s? d?ng trong h? ?i?u h?nh Microsoft
Windows ?? c? ngh?a l? "d? li?u video" b?nh th??ng. N? c? th?
???c m? h?a v?i 1,0 MPEG, 1.1, 2.0 chu?n.
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 ??T v?o t?p tin asf, n?u t?p
tin ???c m? h?a v?i dat mpeg1.0 ??nh d?ng, b?n kh?ng c?n ph?i
c?i ??t b?t k? gi?i m? dat b? sung. N?u file dat ???c m? ho?
v?i mpeg1.1 ho?c 2,0 ??nh d?ng, h?y c?i ??t DVD bao g?m c?c
codec dat th?ch h?p.Vui l?ng b?o ??m c?c t?p tin *. dat l?
file video v? Windows Media Player c? th? ch?i n? v? nhi?u
file kh?c c?ng s? d?ng h?nh th?c n?y m? r?ng.vista c? k?m ??T
1.1/2.0 b? gi?i m?.
Download ASF
Chuy?n ??i n? c? th? chuy?n ??n t?p tin dat asf. Dat ch?n
m?t t?p tin, thay ??i ??nh d?ng ASF ??u ra ?? 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.
H.261 l? l?n ??u ti?n video k? thu?t s?
th?c hi?n m? h?a ti?u chu?n thi?t k? c?a ITU-T ?? ph?t tri?n
truy?n h?nh h?i ngh? v? video tr?n ?i?n tho?i ISDN. N? s? tr?
th?nh khu?n kh? thi?t k? c?c ti?u chu?n qu?c t? sau n?y c?a
Video Coding bao g?m MPEG-1, MPEG-2/H.262 v? H.263. H.261. N?
ch? ?? v?i CIF QCIF v? ??nh d?ng h?nh ?nh b?ng c?ch chia m?i
khung h?nh ?nh v?o l?p, Acer nh?m kh?i l?p, Acer kh?i v? kh?i
l?p. H.261 su?t ??u ra l? kh?ng ??i, trong khi ch?t l??ng h?nh
?nh l? kh?ng ??ng v?ng.
H.263 l? ti?u chu?n d? th?o c?a ITU-T ???c
thi?t k? cho bit th?p truy?n d?ng. Tr?n th?c t? ti?u chu?n c?
th? ???c s? d?ng trong ph?m vi r?ng h?n bitstream nh?ng kh?ng
gi?i h?n ??n bit th?p d?ng. H?n n?a, n? ngh? r?ng s? ???c s?
d?ng ?? thay th? H.261.The thu?t to?n m? h?a c?a H.263 l? c?ng
v?i ?? c?a H.261.but b?n v?n c? m?t s? kh?c bi?t. v? d? nh?
H.263 qua b?n ?? ch?nh x?c cho b?i th??ng chuy?n ??ng trong
khi H.261 qua t?t c? c?c ?i?m ?nh v? ?? ch?nh x?c chu k? l?c,
H.263 ch?a b?n tu? ch?n consultable ?? c?i thi?n hi?u
su?t.
Sau khi c?i ??t b? gi?i m? H.261 ho?c
H.263, asf chuy?n ??i c? th? chuy?n ??i h.261/h.263 ?? asf
file.
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