AVI with B frames (-encode 3:3:2)
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
|
-bframes
|
size
(bytes)
|
job
time |
PSNR |
3:3:2
|
0
|
2323792246
|
4h41m
|
45.61
|
3:3:2
|
1
|
1813799932
|
5h47m
|
44.84
|
3:3:2
|
2
|
1669502912
|
6h18m
|
44.54
|
3:3:2
|
3
|
1626922518
|
6h35m
|
44.41
|
3:3:2
|
4
|
1618671768
|
6h54m
|
44.29
|
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
|
-bframes
|
size
(bytes)
|
job
time |
PSNR |
3:3:2
|
0
|
3377341470
|
5h49m
|
45.69
|
3:3:2
|
1
|
2682984942
|
7h11m
|
44.90
|
3:3:2
|
2
|
2496781108
|
7h35m
|
44.64
|
3:3:2
|
3
|
2445603428
|
8h03m
|
44.45
|
3:3:2
|
4
|
2430680804
|
8h16m
|
44.32
|
Comments
adding B frames reduces a lot the file size (and the PSNR too).
Suggested values are 0, 1 and 2 (the default)