Re: workaround (PPC) for mpeg2enc's buggyness

Le 23 mars 07 à 18:44, Steven M. Schultz a écrit :

>
> On Fri, 23 Mar 2007, Burkhard Plaum wrote:
>
>> If you already talk about "competitors": Are there any figures  
>> about how
>> mpeg2enc compares to ffmpeg (wrt to speed,

I use the 2 tools,
ffmpeg is speeder (but mpeg2enc is not slow)

>> quality and bitstream compatibility)?

quality doesn't mean nothing with ffmpeg (you can produce real  
bullshit as great quality, depends of parameters), with mpeg2enc  
you'll just have quality


> 	At that time ffmpeg had rate control issues that were causing  
> coasters
> 	to be burned in fairly large quantities (rate too high).  Almost
> 	certainly fixed now

yes (if you encode with quality parameters)

> 	Both encoders suffer the splotches or blockyness in the dark/black
> 	areas.

mpeg2enc can be better in this case (certainly because it uses a  
fixed quantizer and ffmpeg an adaptative quantizer that can too much  
reduce the bitrate)

> 	I know that topic has come up numerous times on the mjepgtools
> 	mailing lists.

ffmpeg is bad with low bitrate
mpeg2enc can handle low bitrate with quality

ffmpeg is speeder (even with b frames)

mpeg2enc can include the pulldown bit  during encoding (for NTSC  
film), ffmpeg no

ffmpeg can treat audio and video directly (and mux too)

mpeg2enc has releases and documentation (ffmpeg "no")

etc
etc
etc

> 	Cheers,
> 	Steven Schultz

there's advantages and disadvantages in each tool (I use both and  
both are great ;-))



Hervé
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