[MEncoder-users] WMV problems

Nicolas Hesler nicolas.hesler at sheridanc.on.ca
Wed Jan 2 19:11:04 CET 2008


Rich Felker wrote:
> On Wed, Jan 02, 2008 at 12:57:42PM -0500, Nicolas Hesler wrote:
>   
>> So it's not only broken when using lavf?.... but always broken??
>>     
>
> More or less. Thankfully with the default options (avi muxer, default
> value for -mc, and not including -noskip on the command line) the
> output is "mostly" correct. Often you'll have points of choppiness
> where some frames are lost or duplicated for no good reason, but no
> massive a/v sync. If you tweak these options to try to eliminate the
> minor issues, you're likely to run into much more major problems due
> to the brokenness at the core.
>
> BTW one area where mencoder still shines is inverse telecine,
> especially on animated content. The minor blips, statistically
> speaking anyway, will occur at points where they don't make a
> difference to the output quality.
>
>   
>> Shouldn't there therefore be a HUGE asterisk in the docs somewhere??? Or 
>>     
>
> I wouldn't be opposed to it. :)
>
>   
>> some kind of list of things you can do in Mencoder that can't be 
>> accomplished otherwise with ffmpeg?  (ie dvd compliant streams) Why 
>> bother having docs on how to encode quicktime compatible h264 if ffmpeg 
>> can do a better job of it?
>>     
>
> Many people are lazy and need lots of filtering, e.g. they might be
> going straight from DVD to QT-compatible h264, and then it's a lot
> more work to deal with two tools and temporary files or piping between
> them. But if all you need is reencoding (and maybe some minor scaling
> or whatnot) just use ffmpeg and be happy.
>
> Rich
>
>   
Thanks for letting me know.  

Something I do a lot of and mencoder "seems" to do a good job of it, is 
taking 24fps footage and creating a softtelecine DVD compliant stream.  
Can ffmpeg do this on its own?




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