[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?