AVI with B frames (-encode 3)

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
0
2323792246
4h41m
45.61
3
1
1813799932
5h47m
44.84
3
2
1669502912
6h18m
44.54
3
3
1626922518
6h35m
44.41
3
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
0
3377341470
5h49m
45.69
3
1
2682984942
7h11m
44.90
3
2
2496781108
7h35m
44.64
3
3
2445603428
8h03m
44.45
3
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)