* PCTV T292e whole DVBT2 mux/Ultra HD performance question
@ 2014-07-09 13:14 Andre Newman
2014-07-09 19:18 ` Antti Palosaari
0 siblings, 1 reply; 4+ messages in thread
From: Andre Newman @ 2014-07-09 13:14 UTC (permalink / raw)
To: Linux Media Mailing List
I’m using a T290e for whole mux DVBT2 capture, using this to record the current BBC World Cup Ultra HD tests, works well. :-)
It seems impossible to buy more T290e’s, everyone want to sell me a T292e, I understand there is a driver now, thanks Antti. I read on Antti’s blog that there is a limit on raw TS performance with the T292, that it didn’t work well with QAM256 because of this...
I am wondering if this is a hardware limit, or a performance problem that may have been resolved now the driver is a little tiny bit more mature?
I am very happy to get a T292e and make some tests, help debug if there is a hope that it can handle 40Mbps in hardware.If there is a hardware limit I’d rather not be stuck with a limited tuner!
The mux I need to record is QAM256 at ~40Mbps and the UHD video is ~36Mbps of this.
Otherwise what other DVBT2 tuners are there that can capture a raw QAM256 mux at 40Mbps?
Andre
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: PCTV T292e whole DVBT2 mux/Ultra HD performance question
2014-07-09 13:14 PCTV T292e whole DVBT2 mux/Ultra HD performance question Andre Newman
@ 2014-07-09 19:18 ` Antti Palosaari
2014-07-09 19:21 ` Andre Newman
2014-07-13 11:13 ` Andre Newman
0 siblings, 2 replies; 4+ messages in thread
From: Antti Palosaari @ 2014-07-09 19:18 UTC (permalink / raw)
To: Andre Newman, Linux Media Mailing List
Moikka
On 07/09/2014 04:14 PM, Andre Newman wrote:
> I’m using a T290e for whole mux DVBT2 capture, using this to record the current BBC World Cup Ultra HD tests, works well. :-)
>
> It seems impossible to buy more T290e’s, everyone want to sell me a T292e, I understand there is a driver now, thanks Antti. I read on Antti’s blog that there is a limit on raw TS performance with the T292, that it didn’t work well with QAM256 because of this...
>
> I am wondering if this is a hardware limit, or a performance problem that may have been resolved now the driver is a little tiny bit more mature?
>
> I am very happy to get a T292e and make some tests, help debug if there is a hope that it can handle 40Mbps in hardware.If there is a hardware limit I’d rather not be stuck with a limited tuner!
>
> The mux I need to record is QAM256 at ~40Mbps and the UHD video is ~36Mbps of this.
>
> Otherwise what other DVBT2 tuners are there that can capture a raw QAM256 mux at 40Mbps?
You simply confused two different devices. There is no such limit on
PCTV 292e as far as I know. It is another DVB-T2 device having RTL2832P
bridge having problem with stream bandwidth.
regards
Antti
--
http://palosaari.fi/
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: PCTV T292e whole DVBT2 mux/Ultra HD performance question
2014-07-09 19:18 ` Antti Palosaari
@ 2014-07-09 19:21 ` Andre Newman
2014-07-13 11:13 ` Andre Newman
1 sibling, 0 replies; 4+ messages in thread
From: Andre Newman @ 2014-07-09 19:21 UTC (permalink / raw)
To: Antti Palosaari; +Cc: Linux Media Mailing List
On 9 Jul 2014, at 20:18, Antti Palosaari <crope@iki.fi> wrote:
> Moikka
>
>
> On 07/09/2014 04:14 PM, Andre Newman wrote:
>> I’m using a T290e for whole mux DVBT2 capture, using this to record the current BBC World Cup Ultra HD tests, works well. :-)
>>
>> It seems impossible to buy more T290e’s, everyone want to sell me a T292e, I understand there is a driver now, thanks Antti. I read on Antti’s blog that there is a limit on raw TS performance with the T292, that it didn’t work well with QAM256 because of this...
>>
>> I am wondering if this is a hardware limit, or a performance problem that may have been resolved now the driver is a little tiny bit more mature?
>>
>> I am very happy to get a T292e and make some tests, help debug if there is a hope that it can handle 40Mbps in hardware.If there is a hardware limit I’d rather not be stuck with a limited tuner!
>>
>> The mux I need to record is QAM256 at ~40Mbps and the UHD video is ~36Mbps of this.
>>
>> Otherwise what other DVBT2 tuners are there that can capture a raw QAM256 mux at 40Mbps?
>
> You simply confused two different devices. There is no such limit on PCTV 292e as far as I know. It is another DVB-T2 device having RTL2832P bridge having problem with stream bandwidth.
Ok, great news, thanks.
Sorry for the noise… I’ll get one to try tomorrow.
Regards
Andre
>
> regards
> Antti
>
>
> --
> http://palosaari.fi/
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: PCTV T292e whole DVBT2 mux/Ultra HD performance question
2014-07-09 19:18 ` Antti Palosaari
2014-07-09 19:21 ` Andre Newman
@ 2014-07-13 11:13 ` Andre Newman
1 sibling, 0 replies; 4+ messages in thread
From: Andre Newman @ 2014-07-13 11:13 UTC (permalink / raw)
Cc: Linux Media Mailing List
On 9 Jul 2014, at 20:18, Antti Palosaari <crope@iki.fi> wrote:
> Moikka
>
>
> On 07/09/2014 04:14 PM, Andre Newman wrote:
>> I’m using a T290e for whole mux DVBT2 capture, using this to record the current BBC World Cup Ultra HD tests, works well. :-)
>>
>> It seems impossible to buy more T290e’s, everyone want to sell me a T292e, I understand there is a driver now, thanks Antti. I read on Antti’s blog that there is a limit on raw TS performance with the T292, that it didn’t work well with QAM256 because of this...
>>
>> I am wondering if this is a hardware limit, or a performance problem that may have been resolved now the driver is a little tiny bit more mature?
>>
>> I am very happy to get a T292e and make some tests, help debug if there is a hope that it can handle 40Mbps in hardware.If there is a hardware limit I’d rather not be stuck with a limited tuner!
>>
>> The mux I need to record is QAM256 at ~40Mbps and the UHD video is ~36Mbps of this.
>>
>> Otherwise what other DVBT2 tuners are there that can capture a raw QAM256 mux at 40Mbps?
>
> You simply confused two different devices. There is no such limit on PCTV 292e as far as I know. It is another DVB-T2 device having RTL2832P bridge having problem with stream bandwidth.
And just for the record, as Google seems to find this page first for any mention of the PCTV T292e:
I have a T292e now and it records a full DVBT2 mux at ~40Mbps with no problem at all. I’m using Ubuntu 14.04 with yesterday's media_build script.
Thanks again to Antti and anyone else working on this driver.
Andre
>
> regards
> Antti
>
>
> --
> http://palosaari.fi/
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 4+ messages in thread
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2014-07-09 13:14 PCTV T292e whole DVBT2 mux/Ultra HD performance question Andre Newman
2014-07-09 19:18 ` Antti Palosaari
2014-07-09 19:21 ` Andre Newman
2014-07-13 11:13 ` Andre Newman
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