HD PVR 2 recording at low bitrate

[dIggl3r]

I'm pretty new to NextPVR (long time GBPVR user), I traded my HDPVR 1 for a HDPVR 2, and GBPVR doesn't support it at all, so I'm using NextPVR (let's rejoice hehe). I was able to configure NextPVR to work with the HDPVR 2, but my problem is that all recordings are about ~8888kbps video, far from the 13.5Mbps maximum bitrate. I'm unable to find the setting to increase the bitrate, can someone tell me how??

Thanks.

[dIggl3r]

Eight hours later, isn't there ANYONE using NPVR with a HD PVR 2, on the planet? :S

[sub]

There isn't too many HDPVR2 users.

If you can do a recording, then post your nrecord.log, I can at least check what bitrate it's trying to set the device to.

[dIggl3r]

2013-08-07 05:24:00.072 [INFO][7] About to start graph
2013-08-07 05:24:00.072 [DEBUG][7] Device reports resolution: 1280x720 (fps:60) (aspect:2) (progressive:1) (videoIdCode:4)
2013-08-07 05:24:00.072 [DEBUG][7] device minimum bitrate: 200000
2013-08-07 05:24:00.072 [DEBUG][7] device maximum bitrate: 14000000
2013-08-07 05:24:00.072 [DEBUG][7] device bitrate step size: 100000
2013-08-07 05:24:00.073 [DEBUG][7] device reports current bitrate as: 9000000
2013-08-07 05:24:00.073 [DEBUG][7] device reports current peak bitrate as: 13500000
2013-08-07 05:24:00.073 [DEBUG][7] About to set BITRATE MODE
2013-08-07 05:24:00.073 [DEBUG][7] requesting variable encoding
2013-08-07 05:24:00.073 [DEBUG][7] trying to request bitrate: 9000000
2013-08-07 05:24:00.073 [DEBUG][7] device confirms bitrate as: 9000000
2013-08-07 05:24:00.073 [DEBUG][7] About to set PEAK BITRATE
2013-08-07 05:24:00.073 [DEBUG][7] device minimum peak bitrate: 200000
2013-08-07 05:24:00.073 [DEBUG][7] device maximum peak bitrate: 14000000
2013-08-07 05:24:00.073 [DEBUG][7] device peak bitrate step size: 100000
2013-08-07 05:24:00.073 [DEBUG][7] trying to request peak bitrate: 13500000
2013-08-07 05:24:00.073 [DEBUG][7] device confirms bitrate as: 13500000

Why isn't the BITRATE MODE set at maximum? 9000000 isn't enough.

[mvallevand]

8 hours in a business day isn't a long time, and it is mainly North Americans who use these devices.

Anyway the main problem is that the HDPVR and Colossus sync on the station signal before it tunes which will be SD in the menus or on an SD channel. The best solution if you can is to force you cable box to output a fixed HD signal (I prefer 720p) but another solution is to modify the config.xml setting for SD to be a higher bitrate than these very low default values.

Code:

<ModeSD>
      <Bitrate>3000000</Bitrate>
      <BitratePeak>5000000</BitratePeak>
      <BitrateMode>VBR</BitrateMode>
    </ModeSD>

\


You can also change the 720p/108i rates to whatever you prefer I find the 720p was a little too low too.

Martin

[dIggl3r]

Ahh I see now:

<HDPVR>
<ForceSPDIF>false</ForceSPDIF>
<StopOnChannelChange>false</StopOnChannelChange>
<WaitLongerBeforeRecordingCapture>false</WaitLongerBeforeRecordingCapture>
<Mode720p>
<Bitrate>9000000</Bitrate>
<BitratePeak>13500000</BitratePeak>
<BitrateMode>VBR</BitrateMode>
</Mode720p>
<Mode1080i>
<Bitrate>9000000</Bitrate>
<BitratePeak>13500000</BitratePeak>
<BitrateMode>VBR</BitrateMode>
</Mode1080i>
<ModeSD>
<Bitrate>3000000</Bitrate>
<BitratePeak>5000000</BitratePeak>
<BitrateMode>VBR</BitrateMode>
</ModeSD>
</HDPVR>

By default, it was indeed set low. THANKS mvallevand!

[dIggl3r]

I've got another problem now: it's recording Format profile High@L4.0, but I would prefer 4.1. Is there a setting to edit in config.xml to force 4.1?

[mvallevand]

Why, the max bitrate of 22Mb isn't even 4.0 spec and it doesn't record 1080p60 It shouldn't be a problem with cable or satellite. I know that they typicallly compress and try and get 3 HD channels in 40 Mb. In the states I think DirectTV HD is 6 Mb.

Martin

[dIggl3r]

Why the 22Mb question, I don't get it. The HD PVR 2 can record upto 13.5Mbps, I want to record at the very max bitrate, *even* if it's overkill. I reencode anyway, so better have the max possible bitrate to get the best encode possible.

The HD PVR 2 can record upto 4.2, I read everywhere 4.1 is the best, I'm not an expert and can't tell you if it would change anything to the overall quality of the capture, but since it can do 4.1, and I can record with other softwares at 4.1, it would be appreciated if I could do the same with NPVR.

Can I, is there such a setting to set?

[sub]

No, there is no setting for this. I'm not sure how you set the profile on these devices.