[MPlayer-users] lossless codecs make bigger files than raw DV ?!

[Andrzej M. Ostruszka]

On Tue, Feb 03 (2004), Louis-David Mitterrand wrote:
> I am trying to encode DV (from dvgrab) capture files to a lossless
> video/audio format for storage. What is the best format?
> 
> I have tried to encode to huffyuv but the resulting file is MUCH larger
> than the source file:
> 
> mencoder -oac lavc -ovc lavc -lavcopts vcodec=huffyuv:format=422P:acodec=mp3 file.dv2 -o file.huffyuv
> 
> file.dv2 is 1.4G and file.huffyuv is around 3.8G. How come?

FWIW, I often encode DV to mpeg4 (it would take too many CD to store all
my movies recorded since I bought a camera).  I'm very cautious to not
loose quality (at least not to the extent that would be easily noticable
on 1024x768 screen) and I'm able to get about 14:1 compression (on
average).

Typical parameters:

audio -> encoded with mp3lame with abr and br=64 (64 it's enough for me
	 - the sound recorded by the camcoder is not of top quality)
video -> lavc with vcodec=mpeg4:vhq:vbitrate=2000:vpass=1/2 -vop pp=lb
	 Sometimes I add hqdn3d and twiddle its parameters - especially
	 if the recording was done in a dark place cause somehow this
	 camcoder (Sony) is not able to handle it well -> the picture is
	 noisy.  In such cases it often happens that the encoded picture
	 is of better quality than the original (and is still about 14
	 times smaller :)).

Just my two grosze (polish cent :)).
					Best regards
					Andrzej