[MEncoder-users] -mpegopts format

[Nicolas Hesler]

Nico Sabbi wrote:
>> Nicolas Hesler wrote:
>>
>>     
>>> Would someone be able to give me the exact details/differences 
>>> between -mpegopts format=mpeg2 and -mpegopts format=dvd.  (What are 
>>> the presets set by each of these options and why might it cause the 
>>> problem below??)
>>>  
>>>
>>>       
>> mpeg2 is a format without any stream-specific metadata: pretty useless.
>> format=dvd|xsvcd|xvcd specifies a format for dvd, svcd and vcd 
>> respectively
>>
>>     
>>> When I create an mpeg-2 for DVD using format=mpeg2 with a soft 
>>> telecine, Adobe Encore will accept as a soft telecine file, when I use
>>> format=dvd, it does not and tells me the file needs to be transcoded 
>>> yet again.
>>>  
>>>
>>>       
>> then Encore is an idiot or buggy: the only differences between mpeg2 
>> and dvd
>> are the presence of the fake nav packets before I-frames and a higher 
>> muxrate;
>> nothing else
>>
>>     
>>> Here is the command line I'm using to create my file. If anyone has 
>>> any suggestions or can point out any problems/issues with the order 
>>> or parameters included the command line, please pass them along,
>>>
>>>
>>> mencoder -oac lavc -ovc lavc -of mpeg -mpegopts 
>>> format=mpeg2:tsaf:telecine -vf scale=720:480,harddup -srate 48000 -af 
>>> lavcresample=48000:0:2 -lavcopts 
>>> vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=8600:vbitrate=5000:keyint=12:vstrict=0:acodec=ac3:abitrate=192:aspect=16/9 
>>> -ofps 24000/1001 -o output.mpg input.mpg
>>>
>>>  
>>>
>>>       
>> it's perfectly fine, except that keyint should be 18 for NTSC, but 
>> it's a marginal detail
>>
>>     
>
> FYI,
>
> The latest subversion snapshot (mplayer-checkout-2007-05-28) works with 
> mpegopts format with soft telecine set to dvd and fails with mpeg2  (in 
> Adobe Encore), exactly the opposite of the results I was getting with 
> MEncoder 1.0rc1-4.1.2 .  So something must have changed since....Can 
> anyone make sense of this for me?
>
>
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>   

So I was actually quite wrong about the above.

The latest subversion snapshot does not create Adobe Encore DVD 2.0 
compatible mpeg-2 files with a soft telecine with format set to either 
dvd or mpeg2.   1.0rc1-4.1.2 does for work with format =mpeg2 but not 
with format=dvd.    Again, can anyone make sense of this?