Hi Matti,
> mpeg2enc and mplex seem to use different video buffers for their
> standard SVCD settings. _If_ I'm reading mplex output right, then:
>
> mplex -f 4 (i.e. standard SVCD) uses 235520 B = 230 kB:
>
> INFO: [mplex] Video e0: buf= 235520 frame=000000 sector=00000000
>
> On the other hand, mpeg2enc -f 4 (i.e. standard SVCD) uses 229376 B =
> 224 kB because mplex gives the following output:
>
> INFO: [mplex] Vbv buffer size : 229376 bytes
>
> This 224 kB also seems to be the maximum XSVCD buffer mplex reports.
>
> Maybe the exact value for XSVCD doesn't matter much as long as it is
> about 224-300 kB and the XSVCD doesn't differ much from SVCD.
Well spotted. The reason for the difference is to allow a bit of "safety
margin" in mpeg2enc's bit-rate calculations. Actually, it hasn't really
needed it for quite some time but I never got around to making it all
consistent!
cheers,
Andrew
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