[mythtv-users] nuvexport --sequence-length and auto-splitting

[Steven Cruysberghs]

If i remember correctly when you burn (s)vcd CD's no CRC error checking
is used so you can fit 800 mb mpeg files on a 650 mb (s)vcd.

Op zo 13-06-2004, om 16:21 schreef Ramon Redondo:
> I've been a big fan of using nuvexport to create SVCD images intended to 
> fit on a CD-R.  However, I've always been manually tweaking bitrates 
> until whatever I was exporting would fit on a single CD.  I would look 
> at the file size and if it was too large, I would cut down the bitrate.
> 
> Well, slow as I am I finally noticed a few of things:
> 
> 1)  mplex will automatically attempt to split a file based on the 
> 'sequence-length' used on the ffmpeg command-line from the previous step.
> 2)  nuvexport is setting this sequence-length to 795MB.
> 3)  Splitting of the file will fail if there is no '%d' in the title fed 
> to mplex, leaving you with the max file size, and throwing out the rest 
> of your video.
> 
> Is there a reason that nuvexport sets this sequence length so high?  Am 
> I the only one still using 74 minute (650MB) CDRs?  I have an ancient CD 
> burner which doesn't seem to work with larger discs. 
> 
> Chris:
> Would you have any objection to adding this as a configurable option 
> (both in the menus and the command line)? 
> 
> It probably would be worth noting that the sequence size seems to be 
> based solely on the video size, so 795MB plus a related 192kb audio 
> stream would end up around 811MB.
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