Wednesday, March 23, 2005

Video File Comparison

Video File Comparison
Format
VCD
SVCD
DVD
HDDVD
HDTV
(WMVHD)
AVI
DivX
XviD
WMV
MOV
Quick-
Time
RM
Real-
Media
AVI
DV
Resolution
NTSC/PAL
352x240
352x288
480x480
480x576
720x480²
720x576²
1440x1080²
1280x720²
640x480² 640x480² 320x240² 720x480
720x576
Video
Compression
MPEG1
MPEG2
MPEG2, MPEG1
MPEG2
(WMV-
MPEG4)
MPEG4
Sorenson, Cinepak, MPEG4 ...
RM
DV
Video bitrate
1150kbps
~2000kbps
~5000kbps
~20Mbps
(~8Mbps)
~1000kbps
~1000kbps
~350kbps
25Mbps
Audio
Compression
MP1
MP1
MP1, MP2, AC3, DTS, PCM MP1, MP2, AC3, DTS, PCM MP3, WMA, OGG, AAC, AC3 QDesign Music, MP3 ... RM DV
Audio bitrate
224kbps
~224kbps
~448kbps
~448kbps
~128kbps
~128kbps
~64kbps
~1500kbps
Size/min
10
MB/min
10-20
MB/min
30-70
MB/min
~150MB/min
(~60MB/min)
4-10
MB/min
4-20
MB/min
2-5
MB/min
216MB/min
Min/74min CD
74min
35-60min
10-20min ~4min
(~10min)
60-180min 30-180
min
120-300
min
3min
Hours/DVD
N/A
N/A
1-2hrs
(2-5hrsª)
~30min
(~1hrs)
7-18hrs 3-18hrs 14-35hrs 20min
Hours/
DualLayerDVD
N/A
N/A
2-4hrs
(5-9hrsª)
~55min
(~2hrs)
13-30hrs 6-30hrs 25-65hrs 37min
DVD Player Compatibility
Great Good Excellent None Few None None None
Computer CPU Usage
Low High Very High Super high Very High High Low High
Quality
Good Great* Excellent* Superb* Great* Great* Decent* Excellent
kbps = thousand bits per second
Mbps = million bits per second
² approximately resolution, it can be higher or lower
~ approximately bitrate, it can be higher or lower
ª DVD with lower video quality, similiar to VCD/SVCD video quality
* the video quality depends on the bitrate and the video resolution, higher bitrate and higher resolution generally means better video quality but bigger file size

No comments: