Antw: Re: Antw: Re: [MPlayer-users] (no subject)
Nick
nick.rienties at home.nl
Thu Oct 28 20:13:42 CEST 2004
On Wednesday 27 October 2004 21:00, Loren Merritt wrote:
> Yes. DVDs often contain lots of noise (or film grain, whatever you want to
> call it.) Noise looks bad to begin with, and compresses poorly.
>
> The optimal parameters depend on how much noise is actually in your
> source. The defaults (4:3:6:4.5) are a bit strong, but may be needed for
> some DVDs.
>
> --Loren Merritt
Oke I've encoded Hero with the following commandline:
mencoder -dvd-device ~/movies/dvd/Hero/ dvd://2 -oac copy -vf
crop=720:432:0:72,hqdn3d=4:3:6 -ovc lavc -lavcopts
vcodec=mpeg4:vqscale=2:vhq:autoaspect
-o /home/nick/movies/encode/Hero_vqscale.avi
Results of the encode where I used vqscale:
Playing Hero_vqscale.avi.
AVI file format detected.
AVI: ODML: Building odml index (2 superindexchunks)
VIDEO: [DIVX] 720x432 24bpp 25.000 fps 3466.8 kbps (423.2 kbyte/s)
Clip info:
Software: MEncoder 1.0pre5-3.3.4
Results of the encode where I used the 2-passes method and 9999 bitrate:
Playing Hero.avi.
AVI file format detected.
AVI: ODML: Building odml index (2 superindexchunks)
VIDEO: [DIVX] 720x432 24bpp 25.000 fps 5310.8 kbps (648.3 kbyte/s)
Clip info:
Software: MEncoder 1.0pre5-3.3.4
The weird thing here is that when using vqscale the bitrate and filesize
aren't larger than using the 2-passes method.
2-passes size = 3.9 GB
vqscale size = 2.6 GB
Could someone explain this please?
Regards,
Nick
More information about the MPlayer-users
mailing list