[mythtv-users] Converting "mythtranscoded" files to avi...
scott.pleavin at rogers.com
Thu Jan 3 20:08:17 UTC 2008
Steve Smith wrote:
> On 02/01/2008, *Irumbo Mateene* <imateene at hotmail.com
> <mailto:imateene at hotmail.com>> wrote:
> I installed and used nuvexport to transcode my nuv files to a
> format of my choice .. nuvexport supports several different
> formats including ipod/divx and xvid formats..
> nuvexport is a stand alone script that can do the job for you ..
> You can also create a myth job that you can selectively run on the
> shows you want to convert to the format of your choice.
> for my needs nuvexport is more convenient as it allows me to
> interactively specify the bit rate and other things .. you can
> start with nuvexport and once you know what parameters you use for
> encoding you can then create a myth job that will do the
> transcoding ..
> i'm is proud to present Cause Effect, a series about real people
> making a difference.
> mythtv-users mailing list
> mythtv-users at mythtv.org <mailto:mythtv-users at mythtv.org>
> I've been doing some experimenting:
> What I'm Trying to Transcode to a Portable (i.e. non-NUV!) Format
> Sources: 1) DVB-T (freeview) i.e. MPEG2-TS files
> 2) PVR-150 i.e. MPEG2-PS files
> Transcoded using Mythtranscode on MPEG4 settings to NUV files.
> O/S Ubuntu Feisty.
> What I've Tried So Far on the MPEG4 NUV files
> ffmpeg -i FILE.nuv -vcodec copy -acodec copy -r 25 OUT.avi
> Doesn't work at all. My version of ffmpeg doesn't seem to
> understand the NUV container
> correctly. It produces completely unplayable files.
> NUVEXPORT & nuvexport-xvid --mencoder:
> Coversion starts OK then at some point in the conversion all
> goes haywire the left hand border of the picture moves to the centre
> and you get wierd colour washes.
> || The IT Crowd || becomes | Crowd |||| The IT |
> This is the second time I've seen this effect with both DVB and
> PVR-150 original sources. Also with mytharchive trying to create DVD
> from these NUV files.
> VLC can play the nuv files on Windows with no problems, so I thought
> I'd try its transcoding abilities. It seems that there are differences
> between the Ubuntu and Windows versions.
> Suffice to say the only one with any degree of success was:
> (Windows VLC) NUV ---> MPEG2-PS
> This plays perfectly on VLC but on the DVD player it looks like the
> bit rate is set way too low.
> mencoder INFILE.nuv -ovc copy -oac copy OUT.avi ( I forget the
> exact syntax)
> This produces ALMOST playable results. However glitches (maybe in the
> original) means that the DVD player bombs out playing them. So a 1:30
> sample may only play for 5 secs before it "crashes".
> THE BEST RESULT SO FAR IS:
> Using mencoder to Re-encode (yes I said I didn't want to do
> this!) to XVID (in an AVI container).
> HOWEVER this results in the dreaded lip-sync problems, which the
> yamada dvd-player doesn't provide adjustment for.
> 1) Has anyone else seen these nuvexport problems?
> 2) Any other suggestions for NUV (mpeg4) to "portable format"?
> 3) I'm considering replacing "mythtranscode" with something else
> e.g. ffmpeg, mencoder -> divx etc. However in the past I've had lip
> sync problems with MPEG-TS--> MPEG-PS any idea how to solve this?
> It seems the "simple" matter of archiving my recordings to a portable
> format is not really simple at all.
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> mythtv-users at mythtv.org
I used nuvexport last night to transcode a bunch a files and it did a
fine job although it takes a long time.
selected xvid and took all the recommended options.
I used this guide www.mythtv.org/wiki/index.php/Nuvexport and followed
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