[vlc] Re: VLC TS ratio ?

[James Yates]

 From what I have seen of VLC after looking through the code, VLC no 
longer supports constant Bitrate TS. So no NULL packet padding of the 
stream is done, thus the bitrate of the stream changes constantly. Look 
at the shaping_delay parameter within the code. Sometime ago, VLC 
appeared to output constant bitrate TS but a major re-write of the muxer 
was made and it now only supports variable bitrate. Unless anyone disagrees.
   I was trying to do exactly the same as this. My solution, take VLC, 
rip the part of the DVD either on the fly or to a VOB file. Get VLC to 
generate an MPEG2 ps. You can then use another programme to generate a 
constant bitrate TS. VLC is great but MPEG2 TS support isn't so you will 
have to find another solution. I use a windows programme called Transmux 
from pixeltools.com which is a really good muxer. There are lots of open 
source equivalents though.

    Good Luck

Benjamin Pracht wrote:

>On Thu, Jun 09, 2005, DiBroC wrote :
>  
>
>>Dear VLC team,
>>
>>I want to use VLC in order to convert a DVD
>>into a DVB TS compliant stream.
>>It works, but I have to know the exact TS bitrate
>>(because it has to be send over an ATM network).
>>
>>If I try to use the transcoding, I enter the
>>highest possible value 3072 kbps or 4000 but
>>the program crahs.
>>
>>    
>>
>
>hugh ? which version, could you try with 0.8.2-test2 ?
>
>  
>
>>- What is the default TS ratio if I create a
>>  TS file without to configure transcoding ?
>>    
>>
>
>By defaut, no transcoding is done, this will be the bitrate of the
>source
>
>  
>
>>- When I play the TS file (it works fine) where
>>  could I see (measure) the TS ratio ?
>>  (there is not any hint in the messages)
>>
>>    
>>
>
>VLC doesn't allow to see this AFAIK
>
>  
>

-- 
James Yates
Software Systems Engineer
Packet Vision Ltd
Tel: +44 (0)118 935 7070
Fax: +44 (0)118 935 7330

www.packetvision.com

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