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.
WMA l? Windows Media Audio. WMA l? m?t
??nh d?ng ?m thanh m?i do Microsoft ph?t tri?n, c?ng ???c bi?t
??n nh? MP3. V?i m?t t? l? cao h?n trong c?c t?p tin n?n v?
ch?t l??ng ?m thanh t?t h?n sau n?y, th?m ch? v??t xa nh?ng
ng??i trong RA.
?? chuy?n ??i mpeg4 ?? wma file: The
container 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 WMA Converter m? c? th? chuy?n ??i mpeg4 v?o
t?p tin wma. Ch?n m?t file mpeg4, ??t th?i gian b?t ??u, th?i
gian k?t th?c ho?c bitrate m? h?a ?m thanh, n?u c?n thi?t. C?c
bitrate l? l?n h?n, k?ch th??c t?p tin l? l?n h?n, ch?t l??ng
?m thanh cao h?n, v? ng??c l?i. Nh?n v?o n?t Convert ?? chuy?n
??i mpeg4 ?? wma.

3IVX t?o b?i 3ivx Technologies l? m? h?a
c? b?n cho MPEG-4. ?? l? m?t ??nh d?ng n?n d?a tr?n MPEG4 v?
kh? gi?ng v?i Xvid ho?c DivX. 3IVX kh?ng ph?i l? mi?n ph? ??
t?o ra b? phim v?i 3ivx ch??ng tr?nh m? h?a, trong khi ?? c?
th? ???c t?i v? t? do v? ng??i d?ng kh?ng c?n ph?i thi?t l?p
Xvid v? DivX gi?i m? m?t l?n n?a cho 3ivx m? h?a c?a ch??ng
tr?nh l? c? th? ch?i m? t?t c? c?c ??nh d?ng ???c h? tr? b?i
MPEG4. B?n c?nh ??, do t? l? n?n cao v? ch?t l??ng h?nh ?nh
t?t, n? c?ng s? tr? th?nh m?t ??nh d?ng kh? ph? bi?n tr?n
m?ng.
?? chuy?n ??i 3IVX ??n wma, h?y c?i ??t b?
l?c 3ivx codec. 3ivx ch? l? codec, n? c? th? ???c ch?a
trong *.avi, *.mp4, *.ogm, *.ph?n m? r?ng file mkv vv Sau ??,
chuy?n ??i m?t t?p tin 3ivx cho 3ivx ?? wma trong chuy?n ??i
video.
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