Re: [mythtv-users] NUV TO WINDOWS PC

[Phill Edwards]

>   Phil, as Neils had mentioned you need to convert the NUV container to an
> AVI using a tool like nuv2avi, to be able to access this file in Windows.
> I've still got to try this one out.  I've been trying to use nuvexport (to
> DivX) but the commercial cut locations I put in using myth aren't where they
> are supposed to be when I get the resulting DivX file out.

Thanks - I've figured it out now. I installed thd DS Filters on my
WinXP box and that has a utility to convert the NUV to an AVI. That
AVI can then be opened and edited in VirtualDub.

Regards,
Phill
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Re: [mythtv-users] NUV TO WINDOWS PC

[catfish]

How about VirtualDubMod? It's Virtual Dub with some modifications including 
support for mpeg files. To be honest I haven't tried mpeg4 get but I've had 
no problems editing the mpeg2 nuv files from my PVR350 with it.


http://virtualdubmod.sourceforge.net

Phill Edwards wrote:

I have VirtualDub 1.6.11 installed on my Windows XP box and I thought
I'd be able to use it to do some cuts to my MythTV recordings. I have
a recording which was MPEG2 from a DVB-T broadcast which then got
transcoded to MPEG4 by post recording processing. But when I try to
open it in VirtualDub I get an error that says "Cannot detect file
type".


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Re: [mythtv-users] NUV TO WINDOWS PC

[Greg Grotsky]

On 11/27/05, Phill Edwards <[EMAIL PROTECTED]> wrote:
I have VirtualDub 1.6.11 installed on my Windows XP box and I thoughtI'd be able to use it to do some cuts to my MythTV recordings. I havea recording which was MPEG2 from a DVB-T broadcast which then gottranscoded to MPEG4 by post recording processing. But when I try to
open it in VirtualDub I get an error that says "Cannot detect filetype". I have ffdshow installed. Does anyone know what I need to do toconfigure this setup so that I can edit my recording with VirtualDub?

  Phil, as Neils had mentioned you need to convert the NUV
container to an AVI using a tool like nuv2avi, to be able to access
this file in Windows.  I've still got to try this one out. 
I've been trying to use nuvexport (to DivX) but the commercial cut
locations I put in using myth aren't where they are supposed to be when
I get the resulting DivX file out.

  I'm going to try using myth to transcode the MPEG2 TS stream to
MPEG4/MP3 and then use nuv2avi to recontain it to an AVI.  I hope
it works... I need some way to archive this stuff!  I'd really
like to use nuvexport because it doesn't affect the myth recordings at
all (I can leave them MPEG2), it just converts on the fly and dumps to
a new file.  But without accurate cuting it's worthless.

-Greg

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Re: [mythtv-users] NUV TO WINDOWS PC

[Phill Edwards]

> In both cases, the resulting files play in Windows Media Player with the 
> codecs
> that come with any system.  You don't need to install any external codecs or
> codec packs to view the transcoded video.  With a cable-modem connection at
> home and broadband of some sort in the hotel (or wherever), I can watch MythTV
> recordings anywhere.  You can even cut the commercials out of the downloaded
> file in just a few minutes with VirtualDub (you'll need to install ffdshow and
> configure it to make its MPEG-4 decoder available to VfW so you can see what
> you're cutting), so you can just kick back and let the show run.

I have VirtualDub 1.6.11 installed on my Windows XP box and I thought
I'd be able to use it to do some cuts to my MythTV recordings. I have
a recording which was MPEG2 from a DVB-T broadcast which then got
transcoded to MPEG4 by post recording processing. But when I try to
open it in VirtualDub I get an error that says "Cannot detect file
type". I have ffdshow installed. Does anyone know what I need to do to
configure this setup so that I can edit my recording with VirtualDub?

Regards,
Phill
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Re: [mythtv-users] NUV TO WINDOWS PC

[Scott Alfter]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Because it fscks up the flow of conversation!
>Why is top-posting so bad?
>>Top-posting!
>>>What's the most annoying thing on email lists?

Raphael Pooser top-posted (grr):
> Scott Alfter wrote:
>> Martin Hartman III wrote:
>>> For all you Windows users out there, all you have to do is download the
>>> .nuv file through a Samba mount on your MythTV box and rename the
>>> extension to .mpg and it will work perfectly.
>>
>> As others have no doubt already pointed out, that only works if your 
>> MythTV recordings are MPEG-2 (which means you're most likely doing
>> hardware encoding). That said, you can transcode your video (whether
>> captured with hardware or software encoding) with mplayer into a smaller
>> AVI that your Windows machines can play. You can even get watchable video
>> at a low-enough bitrate that it's feasible to download the transcoded
>> video from your server at home to a remote location (like when you're out
>> of town).
>>
>> [sample usage of mplayer for transcoding snipped]
>
> So, there is the built in software transcoder in myth, and you can use
> that to transcode to mpeg4.  Once you do that, the files are named still
> with extension .nuv.  Can you open and play those in windows media
> player (or any other player for windows like ati fileplayer for
> example)?

By itself, DirectShow knows nothing about the NuppelVideo container format.
There are some filters available (google for "dsmyth") that include a
NuppelVideo demuxer.  I prefer going the mplayer route for this kind of
transcoding because AVI is more usable under Windows than NuppelVideo (you
can't edit NuppelVideo AFAIK, but there are tons of apps (such as VirtualDub)
to edit AVIs).

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=VHp4
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Re: [mythtv-users] NUV TO WINDOWS PC

[Raphael Pooser]

Niels+Ken
Good stuff.  Thanks for the info.  Will be looking into nuvexport and 
dsmyth.  I'm sure that I could put a script into the user jobs section 
and then just execute a nuvexport script for whatever recordings I want 
to watch over on the windows box.  Myth sure was built with no end of 
possibilities.
As a side note, I only use windows to game.  However, if someone is 
watching something I don't want to on the TV machine, this will be 
useful to then use the windows machine to watch some things in parallel.

Raphael

Niels Dybdahl wrote:


So, there is the built in software transcoder in myth, and you can use
that to transcode to mpeg4.  Once you do that, the files are named
still
with extension .nuv.  Can you open and play those in windows media
player (or any other player for windows like ati fileplayer for
example)?  



Yes you can do that. But after transcode the file has a "real" .nuv 
"header"/envelope, so you need the dsmyth filter (dsmyth.sf.net 
) to be able of using the .nuv file on Windows. 
In addition you need a MPEG4 codec on your Windows PC.


When you have transcoded the file to MPEG4, you can replace the header 
with the nuv2avi application (on Linux!), which without recoding 
creates an MPEG4 AVI file from the nuv file. Note that time stamps in 
the nuv file are lost, so you might get audio sync problems with the 
resulting AVI file, especially if you have the recording from a noisy 
source.
The dsmyth filter and nuvexport to DIVX format are methods that handle 
the time stamps correctly in my experience.


Also note that the dsmyth filter is a "Direct Show" filter and not a 
"Video for Windows" filter. So with dsmyth you can use nuv files in 
"Direct Show" players such as Windows Media Player and ZoomPlayer, but 
you can not use it in Windows video editing applications, that require 
"Video for Windows" access to the video file.


Niels Dybdahl



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Re: [mythtv-users] NUV TO WINDOWS PC

[Niels Dybdahl]

So, there is the built in software transcoder in myth, and you can usethat to transcode to mpeg4.  Once you do that, the files are named still
with extension .nuv.  Can you open and play those in windows mediaplayer (or any other player for windows like ati fileplayer forexample)?  
Yes you can do that. But after transcode the file has a "real" .nuv
"header"/envelope, so you need the dsmyth filter (dsmyth.sf.net) to be
able of using the .nuv file on Windows. In addition you need a MPEG4
codec on your Windows PC.

When you have transcoded the file to MPEG4, you can replace the header
with the nuv2avi application (on Linux!), which without recoding
creates an MPEG4 AVI file from the nuv file. Note that time stamps in
the nuv file are lost, so you might get audio sync problems with the
resulting AVI file, especially if you have the recording from a noisy
source.
The dsmyth filter and nuvexport to DIVX format are methods that handle the time stamps correctly in my experience.

Also note that the dsmyth filter is a "Direct Show" filter and
not a "Video for Windows" filter. So with dsmyth you can use nuv files
in "Direct Show" players such as Windows Media Player and ZoomPlayer,
but you can not use it in Windows video editing applications, that
require "Video for Windows" access to the video file.

Niels Dybdahl

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Re: [mythtv-users] NUV TO WINDOWS PC

[Ross Campbell]

On 11/8/05, Jeff volckaert <[EMAIL PROTECTED]> wrote:
Is there anyway from the command line to also get the commercial
cutlist?  I like the idea of transocde built into Mythtv,
espcially with the builtin cutlist, but I don't want to replace the
recording in MythTv.  I want a seperate directory of AVIs that I
could copy to my pocketpc and still watch the original under Mythtv.
This is just one of the many great things nuvexport does.

-Ross 


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Re: [mythtv-users] NUV TO WINDOWS PC

[Jeff volckaert]

Is there anyway from the command line to also get the commercial
cutlist?  I like the idea of transocde built into Mythtv,
espcially with the builtin cutlist, but I don't want to replace the
recording in MythTv.  I want a seperate directory of AVIs that I
could copy to my pocketpc and still watch the original under Mythtv.

The Myth2Ipod stuff looks interesting.  I may play around with it to see if I can get something working for the pocketpc.

Jeff
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Re: [mythtv-users] NUV TO WINDOWS PC

[Ken Bass]

Raphael Pooser wrote:

> So, there is the built in software transcoder in myth, and you can use
> that to transcode to mpeg4.  Once you do that, the files are named
> still with extension .nuv.  Can you open and play those in windows
> media player (or any other player for windows like ati fileplayer for
> example)?  In your example you changed the extension to .avi but
> otherwise it looks to do about that same as if you used the transcoder
> in myth, except that you are tailoring the files to be much smaller
> for your own purposes.
> Raphael

Think of .avi not as a specific encoding but as a 'container'. It is a
flexible file format which
contains different encoded data and slaps a 'header' onto the data to
indicate what type is inside the file. Regardless, you'll need a codec
installed on your machine to understand however the data was encoded.
And you need to know what is inside that .avi file so you know what
codec you need.

Windows Media Player comes with many codecs installed. The encoder
command Martin mentioned in this 'mencoder' command used the 'msmpeg4v2'
which is the Microsoft MPEG4 Version 2 codec which is supported in
Windows XP SP2.

Here is the default list of codecs for WMP 9/10.
http://support.microsoft.com/default.aspx?scid=kb;en-us;899113#appliesto

Windows Media Player does not come with MPEG-2 codec installed. However,
most people who have installed a DVD application such as PowerDVD or
WinDVD will have a codec installed by those applications so it works on
those machines. When WMP tries to play MPEG-2 it will use the codec
installed by the DVD application.
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Re: [mythtv-users] NUV TO WINDOWS PC

[Raphael Pooser]

So, there is the built in software transcoder in myth, and you can use 
that to transcode to mpeg4.  Once you do that, the files are named still 
with extension .nuv.  Can you open and play those in windows media 
player (or any other player for windows like ati fileplayer for 
example)?  In your example you changed the extension to .avi but 
otherwise it looks to do about that same as if you used the transcoder 
in myth, except that you are tailoring the files to be much smaller for 
your own purposes.

Raphael

Scott Alfter wrote:


Martin Hartman III wrote:
 

From day one I wanted to be able to download shows from my MythTV box, 
convert them, and burn to DVD.  I am a life long Windows user and did

not think this was possible to go from .nuv to something Windows could
understand.  I read how you had to use nuvexport or nuv2avi.  Well, I am
here to tell you that this is not at all necessary.  For all you Windows
users out there, all you have to do is download the .nuv file through a
Samba mount on your MythTV box and rename the extension to .mpg and it
will work perfectly.
   



As others have no doubt already pointed out, that only works if your MythTV
recordings are MPEG-2 (which means you're most likely doing hardware encoding).
That said, you can transcode your video (whether captured with hardware or
software encoding) with mplayer into a smaller AVI that your Windows machines
can play.  You can even get watchable video at a low-enough bitrate that it's
feasible to download the transcoded video from your server at home to a remote
location (like when you're out of town).

The following command will transcode foo.nuv to a 768-kbps file with MPEG-4
video and MP3 audio (line breaks are for clarity):

mencoder -o foo.avi -ovc lavc \
   -lavcopts vcodec=msmpeg4v2:bitrate=704 \
   -vop scale=320:240 \
   -srate 32000 \
   -oac mp3lame \
   -lameopts cbr:br=64:mode=3 \
   foo.nuv

The video is scaled to 320x240 and encoded at 704 kbps.  The audio is
subsampled to 32 kHz and encoded in mono at 64 kbps CBR.

If your upstream bandwidth is further constrained, you can get watchable
quality at 256 kbps:

mencoder -o foo.avi -ovc lavc \
   -lavcopts vcodec=msmpeg4v2:bitrate=224 \
   -vop scale=240:180 \
   -srate 22050 \
   -oac mp3lame \
   -lameopts cbr:br=32:mode=3 \
   foo.nuv

The video is scaled to 240x180 and encoded at 224 kbps.  The audio is
subsampled to 22.05 kHz and encoded in mono at 32 kbps CBR.

In both cases, the resulting files play in Windows Media Player with the codecs
that come with any system.  You don't need to install any external codecs or
codec packs to view the transcoded video.  With a cable-modem connection at
home and broadband of some sort in the hotel (or wherever), I can watch MythTV
recordings anywhere.  You can even cut the commercials out of the downloaded
file in just a few minutes with VirtualDub (you'll need to install ffdshow and
configure it to make its MPEG-4 decoder available to VfW so you can see what
you're cutting), so you can just kick back and let the show run.

 _/_
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(IIGS( http://alfter.us/Top-posting!
\_^_/ rm -rf /bin/laden>What's the most annoying thing on Usenet?
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Re: [mythtv-users] NUV TO WINDOWS PC

[Scott Alfter]

Martin Hartman III wrote:
> From day one I wanted to be able to download shows from my MythTV box, 
> convert them, and burn to DVD.  I am a life long Windows user and did
> not think this was possible to go from .nuv to something Windows could
> understand.  I read how you had to use nuvexport or nuv2avi.  Well, I am
> here to tell you that this is not at all necessary.  For all you Windows
> users out there, all you have to do is download the .nuv file through a
> Samba mount on your MythTV box and rename the extension to .mpg and it
> will work perfectly.

As others have no doubt already pointed out, that only works if your MythTV
recordings are MPEG-2 (which means you're most likely doing hardware encoding).
 That said, you can transcode your video (whether captured with hardware or
software encoding) with mplayer into a smaller AVI that your Windows machines
can play.  You can even get watchable video at a low-enough bitrate that it's
feasible to download the transcoded video from your server at home to a remote
location (like when you're out of town).

The following command will transcode foo.nuv to a 768-kbps file with MPEG-4
video and MP3 audio (line breaks are for clarity):

mencoder -o foo.avi -ovc lavc \
-lavcopts vcodec=msmpeg4v2:bitrate=704 \
-vop scale=320:240 \
-srate 32000 \
-oac mp3lame \
-lameopts cbr:br=64:mode=3 \
foo.nuv

The video is scaled to 320x240 and encoded at 704 kbps.  The audio is
subsampled to 32 kHz and encoded in mono at 64 kbps CBR.

If your upstream bandwidth is further constrained, you can get watchable
quality at 256 kbps:

mencoder -o foo.avi -ovc lavc \
-lavcopts vcodec=msmpeg4v2:bitrate=224 \
-vop scale=240:180 \
-srate 22050 \
-oac mp3lame \
-lameopts cbr:br=32:mode=3 \
foo.nuv

The video is scaled to 240x180 and encoded at 224 kbps.  The audio is
subsampled to 22.05 kHz and encoded in mono at 32 kbps CBR.

In both cases, the resulting files play in Windows Media Player with the codecs
that come with any system.  You don't need to install any external codecs or
codec packs to view the transcoded video.  With a cable-modem connection at
home and broadband of some sort in the hotel (or wherever), I can watch MythTV
recordings anywhere.  You can even cut the commercials out of the downloaded
file in just a few minutes with VirtualDub (you'll need to install ffdshow and
configure it to make its MPEG-4 decoder available to VfW so you can see what
you're cutting), so you can just kick back and let the show run.

  _/_
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 \_^_/ rm -rf /bin/laden>What's the most annoying thing on Usenet?
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Re: [mythtv-users] NUV TO WINDOWS PC

[Michael T. Dean]

Steve Hodge wrote:


On 11/8/05, Ramon Redondo <[EMAIL PROTECTED]> wrote:
 


Actually, the DirectShow filters do not require MPEG2-based NUV files.
I've used them for viewing NUVs created with my BTTV card.
   


If your .nuv files are encoded with MPEG4 then you also need an MPEG4
codec installed under Windows - the MythTV DirectShow filters are not
enough by themselves in that case.
 

And, believe it or not, if your files are MPEG-2, you need an MPEG-2 
CODEC...


Mike

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Re: [mythtv-users] NUV TO WINDOWS PC

[Steve Hodge]

On 11/8/05, Ramon Redondo <[EMAIL PROTECTED]> wrote:
> Actually, the DirectShow filters do not require MPEG2-based NUV files.
>  I've used them for viewing NUVs created with my BTTV card.

If your .nuv files are encoded with MPEG4 then you also need an MPEG4
codec installed under Windows - the MythTV DirectShow filters are not
enough by themselves in that case.

Steve
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Re: [mythtv-users] NUV TO WINDOWS PC

[Ken Bass]

Ramon Redondo wrote:

Actually, the DirectShow filters do not require MPEG2-based NUV files.
 I've used them for viewing NUVs created with my BTTV card.


You are correct, but I wasn't commenting on the DirectShow filters (note 
that I didn't quote that part of the posters message). I was commenting 
on the claim that you can simply rename a NUV file to a MPG file and 
play it using Windows Media Player. I didn't want a someone to see that 
and try it not realizing it was dependent on their capture card.


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Re: [mythtv-users] NUV TO WINDOWS PC

[Ramon Redondo]

Actually, the DirectShow filters do not require MPEG2-based NUV files.
 I've used them for viewing NUVs created with my BTTV card.
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Re: [mythtv-users] NUV TO WINDOWS PC

[Ken Bass]

Martin Hartman III wrote:

For all you Windows
users out there, all you have to do is download the .nuv file through a 
Samba mount on your MythTV box and rename the extension to .mpg and it 
will work perfectly.  Keep in mind I am using Windows XP Pro with the 
latest version of Media Player.  Once you have the file renamed you can 
throw it in a program like Nero and it will transcode and burn no 
problem.  I hope this information helps some of you newbs out there.


A few caveats:

1) This only works for those using a capture card that produces MPEG 
compressed data like the PVR-250 or PVR-350. Other capture cards which 
do not compress also produce an NUV file which is NOT an MPEG file and 
you cannot do this.


2) On my system, I simply double click the .nuv file. Windows Media 
Player will say it doesn't understand the .nuv extensions but it might 
be playable - should it try? If you say yes and tell it to remember then 
you can play .nuv directly from your samba mounted video storage without 
renaming any files.

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[mythtv-users] NUV TO WINDOWS PC

[Martin Hartman III]

Since I have reaped the benefits of this mail list I wanted to give 
something back.  This may be obvious or old information so bare with me.  In 
my pursuit of a MythTV box I never came across this information so it may 
help someone else who is in a similar position.


From day one I wanted to be able to download shows from my MythTV box, 
convert them, and burn to DVD.  I am a life long Windows user and did not 
think this was possible to go from .nuv to something Windows could 
understand.  I read how you had to use nuvexport or nuv2avi.  Well, I am 
here to tell you that this is not at all necessary.  For all you Windows 
users out there, all you have to do is download the .nuv file through a 
Samba mount on your MythTV box and rename the extension to .mpg and it will 
work perfectly.  Keep in mind I am using Windows XP Pro with the latest 
version of Media Player.  Once you have the file renamed you can throw it in 
a program like Nero and it will transcode and burn no problem.  I hope this 
information helps some of you newbs out there.


Dowload DirectShow Filter to see what show you are downloading from your 
Samba mount.


http://sourceforge.net/projects/dsmyth


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