[MEncoder-users] real-time encoding of DVB-S @ 900 MHz

[Nico Sabbi]

Moritz Beller wrote:

>On Sun, 26 Jun 2005 12:10:08 +0200
>Reimar Döffinger <Reimar.Doeffinger at stud.uni-karlsruhe.de> wrote:
>
>  
>
>>You of course can't expect
>>to get perfect quality, small files and realtime encode together...
>>    
>>
>
>Very well said.
>
>I experimented the whole day through now and went for these solutions: 
>
>DVB: RECORDING
>
>(1) sudo nice --10 mencoder "dvb://Das Erste"
>-o Take.avi -oac copy -ovc lavc -lavcopts vcodec=mpeg2video -vf
>scale=467:350
>  
>

you should never encode to resolutions that aren't integer multiples of 16.
Besides, you are storing mpeg2 in avi. Are you sure you don't want it 
stored in mpeg?
Why don't you add at least mbd=2 ?

>Makes small, VCD-ready files in reasonably good quality (~7.2MB/M)
>
>(2) sudo nice --10 mencoder "dvb://Das Erste" -o test1-mp3.avi  -oac
>mp3lame -lameopts mode=0:cbr:aq=3 -ovc lavc -lavcopts vcodec=mpeg2video
>-vf scale=384:288
>
>Outputs small, VCD-ready files in acceptable quality, decreasing
>the filesize even further by encoding the audiostream to MP3 (~7MB/M)
>
>(3) sudo nice --10 mencoder dvb://Das Erste -oac mp3lame -lameopts
>mode=0:cbr:aq=3 -ovc lavc -lavcopts vcodec=mpeg4:vqscale=2:keyint=1
>-vf scale=384:288 -o test.avi 
>
>Produces high-quality, yet very big files (~40MB/M)
>
>  
>