AVI (mpeg4)
Source video 1
The video is a 95 minutes 720x480 16/9 NTSC dvd movie. The raw mpeg2
video stream and the ac3 audio stream is 3699878452 bytes long.
-encode
|
size
(bytes)
|
job
time |
PSNR |
note |
3:2:1
|
2869812542
|
1h16m
|
46.60
|
one pass
|
3:2:2
|
2868732892
|
2h31m
|
46.60
|
|
3:3:2
|
1669502912
|
6h18m
|
44.54
|
2 B frames
|
3:4:2
|
2975708584
|
12h16m
|
47.57
|
best quality
|
Source video 2
The video is a 121 minutes 720x480 4/3 NTSC dvd movie. The raw mpeg2
video stream and the ac3 audio stream is 4552779680 bytes long.
-encode
|
size
(bytes)
|
job
time |
PSNR |
note |
3:2:1
|
3897234766
|
1h34m
|
46.52
|
one pass
|
3:2:2
|
3895893362
|
3h11m
|
46.52
|
|
3:3:2
|
2496781108
|
7h35m
|
44.64
|
2 B frames
|
3:4:2
|
3998474932
|
14h37m
|
47.56
|
best quality
|
Comments
-encode 3:4:2 gives you the best PSNR
-encode 3:2:2 gives the best compression
without touching the video bitrate
-encode 3:2:2 has good quality and is fast
2 pass
-encode 3:2:1 is the fastest mode.