[MEncoder-users] Re: Encoding to FLV from WMV is HORRID

[Musixz Man]

Jon,

Thanks. I understand the GIGO concept but the quality of the WMVs going in 
is quite good.

Most of what Ive been testing is as 320x240 (in and out) - just to keep it 
quick while testing.

Im not expecting the FLV encoding to improve the quality, but I wasnt 
expecting it to totally trash it either.

For example, encoding a decent avi/mpg/mov (who's quality I'd rate at an 8) 
to FLV, the resulting FLV would be a 6 or 7 depending on how high I go with 
the bitrate.

But, if I take a compariable WMV and encode to FLV, the resulting FLV would 
be a 2 at best - color bands, serious artifacts, what looks like 4 bit 
color, etc.

Since I'm doing this via PHP, my exec command is as follows:

"mencoder ".$srcname." -o ".$flvname." -of lavf -oac mp3lame -lameopts 
abr:br=56 -vf scale=".$out_x.":".$out_y." -ovc lavc -lavcopts 
vcodec=flv:vbitrate=".$outvbr.":mbd=2:mv0:trell:v4mv:cbp:last_pred=3 
-lavfopts i_certify_that_my_video_stream_does_not_use_b_frames -srate 22050"

Obviously, I pass in the source files, output file, bitrate and resolutions.

Im really hoping Im just doing something wrong here.

Thanks!





>From: Jon Drukman <jsd at cluttered.com>
>Reply-To: MEncoder usage discussions <mencoder-users at mplayerhq.hu>
>To: mencoder-users at mplayerhq.hu
>Subject: [MEncoder-users] Re: Encoding to FLV from WMV is HORRID
>Date: Tue, 17 Oct 2006 09:50:42 -0700
>
>Musixz Man wrote:
>>Hi!
>>
>>MPG, MOV, and AVI all convert to FLV beautifully!
>>
>>But, when encoding to FLV from WMV (7,8), the result is horrible to say 
>>the least. And this is regardless of the bitrate I set.
>>
>>Im using pre8 with the latest codec pack on linux.
>>
>>Am I missing something here like a special WMV setting? Or does WMV -> FLV 
>>just suck for everybody?
>>
>>Thanks for any help.
>
>hard to say without knowing more about the input and output files (what's 
>the dimensions/bitrate of the input?  what are the dimensions/bitrate of 
>the output?  what mencoder commands are you using?)
>
>in general though, "garbage in garbage out."
>
>-jsd-
>
>
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