Convert HD OTA MPEG from 1280x720 to SD for playback on MediaMVP?

ReedMikel

New member
I have a .tp file recorded by an ADS Instant HDTV PCI tuner card. I figured out how to extract the desired stream and save it as a MPG file. But the resulting MPG file is still 1280x720 progressive, which will not play on my MediaMVP unit. Does anyone know of a way to use VRD to convert the HD recording to a format the MVP can play? The MVP specs say up to 720x480 and 8Mbps are supported.

How about DivX? I use GB-PVR software instead of Hauppauge's with the MVP, and it can now play DivX I believe. Would that offer any solution?

I guess the AC3 audio will be another stumbling block as well, right? "AC3" - I assume that relates to multiple channel audio (e.g. 5.1)? So many acronymns - so little time :)

TIA!
 

laserfan

New member
AutoGK can be used with either Divx (use Home Theater profile) or Xvid and will do what you want. Very easy to use. I usually fix my encodes at 640 or 656 pixels wide, but yes you can do to 720.

I don't know what kind of chipset the MVP uses--AutoGK has some "Hidden Options" at CTRL-F9 to enable checking of MTK/Sigma or ESS chipsets (my Pinnacles are Sigma Designs). This optimizes the encoding for the chipset/player.

You can have AC3 multichannel audio with your Xvids (and Dvix I think) or you can tell AutoGK to convert it to MP3. If you convert, I suggest Constant Bitrate (another acronym, CBR) as I have had problems w/VBR MP3 embedded audio.
 

laserfan

New member
Mike I read some more about the MVP and apparently it only does MPEG-2 natively, and that DivX (and anything else presumably) has to be re-encoded on-the-fly to MPEG-2. If this is the case, you may want to stick with MPEG-2 encoding.

I think DVD2SVCD or HDTV2DVD or one of those may do the trick for you. Sorry if I confused you w/AutoGK.

P.S. I read about the MediaMVP here.
 

phd

Super Moderator
The latest versions of Hauppauge will play back Divx on the MVP. Be aware, you need a pretty beefy machine for this as it transcodes Divx to MPEG on the fly for playback. Navigation sinks and it crashes my 2.2 Celeron with Wint2K running simuiltaneously.
 

Robbi

New member
ReedMikel said:
I guess the AC3 audio will be another stumbling block as well, right? "AC3" - I assume that relates to multiple channel audio (e.g. 5.1)? So many acronymns - so little time
That is correct the MVP cannot playback AC3 audio, from a file or dvd.
 
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ReedMikel

New member
My situation is that I have multiple PVRs in my house: 1) two MediaMVPs 2) Win MCE PC with HDTV tuner, Beyond TV s'ware etc.

I was hoping that any HDTV recordings made on my PC could easily be viewed on the MVP. But it looks like it's not that easy :) Maybe I'll wait until the next generation MVP-like device comes out that can play either .TP HD streams or HD MPEGs... It's just that the MVPs can be had for as little as $40, which makes them sooo affordable :)

Thanks for all the information!!
 

ReedMikel

New member
DanR or anyone else - I assume VideoReDo can not convert a HD quality .TP or .MPEG down to SD, right?

If that's the case, could I suggest adding this as an Enhancement Request?

PS - Any tips on the steps involved in converting the AC3 audio to MPEG audio?
 

laserfan

New member
ReedMikel said:
...Maybe I'll wait until the next generation MVP-like device comes out that can play either .TP HD streams or HD MPEGs... It's just that the MVPs can be had for as little as $40, which makes them sooo affordable
Yes, but you get what you pay for. I saw them at Radio shack for $30 and still passed on it.

My Pinnacle ShowCenter 200 (about a year on the market) plays HD transports streams beautifully (via wired ethernet) including even 19.2Mbps ones. You'll pay $200 or more for it, but there are numerous HD-capable devices like this available presently.
 

phd

Super Moderator
When you are saving a file in VideoReDo, click on the options button in the File save dialog box.
 

Robbi

New member
AC3 to MPEG audio

Use vrd save option to save as Elementary Streams, when saving using the save options.

Use this now demuxed audio file in in a tool like BeSweet or similar audio converting software. This will convert your AC3 audio quickly. It can be run from either cli, batch and gui interfaces.

You could use other audio softwares to do this, but too many are bloatware with features you may not want. Besweet is very simple and small fast utility, that is good at what it does.

Then use Muxman or similar tool, to remux the file back together again. Muxman now may not be freeware any longer, you may have to search around for another remux tool.
 

Robbi

New member
AC3 to MPEG audio

Use vrd save option to save as Elementary Streams, when saving using the save options.

Use this now demuxed audio file in in a tool like BeSweet or similar audio converting software. This will convert your AC3 audio quickly. It can be run from either cli, batch and gui interfaces.

You could use other audio softwares to do this, but too many are bloatware with features you may not want. Besweet is very simple and small fast utility, that is good at what it does.
 
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