[mythtv-users] nuvexport speeding up

[spectro]

IMHO, there are no noticeable quality differences between exporting to
DVCD or using this hack.



On Mon, 22 Nov 2004 09:28:46 -0500, Matt Vollmar <matt at vollmars.com> wrote:
> spectro wrote:
> 
> 
> 
> >YOU ROCK!
> >
> >After implementing your hack I am exporting DVCD using the WMV option,
> >but know instead of 1 episode every 3 hours I am exporting 3
> >episodes/hour (around 50fps). At last I can move all these Stargate
> >episodes to DVD.
> >
> >I am wondering if we can map parameters from meconder to ffmpeg and
> >create a wrapper script so every time nuvexport tries to run mencoder
> >it is actually running the much faster ffmpeg.
> >
> >
> >
> >On Tue, 16 Nov 2004 16:29:13 -0400, Jonathan Markevich
> ><mythtv at jonandtina.net> wrote:
> >
> >
> >>I found something... I duplicated the WMV.pm file in
> >>/usr/share/nuvexport/export and went down to the command-line
> >>construction of the ffmpeg string, about line 104.  I changed the vcodec
> >>to mpeg1video, changed -f asf to -f vcd and made sure I fed in the right
> >>stats (224 audio bitrate, and I think it's 1150 for the video bitrate?,
> >>352x240).  With no noise removal I was done a half-hour show in 8
> >>minutes.  It turned out not to be a textbook VCD file because the audio
> >>needs to be resampled (I had it at 48000 and it needs 44100) but it is a
> >>mpeg file, and it was VERY fast to encode!
> >>
> >>ffmpeg's documentation tells me that -target vcd is supposed to set all
> >>of the right things, but when I removed everything else and added that,
> >>it refused to run.  It might have something to do with the rest of the
> >>command-line parameters that are applied to it.  I couldn't find them in
> >>my first investigation, though.  I also tried to add an additional
> >>module to the menu, but it wouldn't show up either.  I have to dig into
> >>the basics of the menu system for that, and I'm kinda running out of
> >>time today.
> >>
> >>Hopefully, I've put someone else on the right track, though!  As for me,
> >>I'm pretty happy with any kind of MPEG file that I can tweak on another
> >>system.  I haven't looked too closely at the quality just yet, but the
> >>transcode fps numbers were sweet (70-75fps)
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> >>
> >>
> >>
> >>------------------------------------------------------------------------
> >>
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> >>
> >>
> How was the quality?  I need to take some stuff off of the hard drive,
> but I don't want to lose all the quality.
> 
> Matt
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