[Ffmpeg-devel] encoding quality

[Zoltan NAGY]

Michael Niedermayer wrote:
> Hi
>
> On Mon, Mar 20, 2006 at 06:27:53PM +0100, Zoltan NAGY wrote:
>   
>> hello ppl!
>>
>> I'd like to ask your advices in an encoding matter.
>> I have several files, which I'd like to encode into flv. They're in 
>> different formats,
>> but most likely wmv2 and wmv3.
>>
>> Currently I'm using mplayer:
>> mencoder original.wmv -vf harddup -ofps 24 -oac mp3lame -ovc lavc 
>> -lavcopts vcodec=ffv1:vstrict=-2 -o out.avi
>>
>> then ffmpeg to encode this out.avi into flv:
>> ffmpeg -y -i out.avi -f flv -b 512 out_end.flv
>>
>> but the flv's quality really sucks. If I change the bitrate to 1024 or 
>> 2048 or above,
>> then it's ~fine, but the filesize gets bigger and bigger..
>>
>> what options could I tweak? I'd like to keep my file's sizes little, but 
>> I wouldnt like to
>> loss a lot quality..
>>     
>
> 2pass, trellis quant, 4mv, mbd=2, ...
>   
but how could I pass these options to the flv encoder? :)
I'd be happy to read any mans, I just didnt found a really good
one explaining things :-)

Thanks,

Zoltan NAGY,
Software Engineer