Re: em28xx_isoc_dvb_max_packetsize for EM2884 (Terratec Cinergy HTC Stick)

Dennis Sperlich
2011-12-25T20:12:08Z

On 25.12.2011 20:42, Malcolm Priestley wrote:
> On Sun, 2011-12-25 at 15:11 +0100, Hans Petter Selasky wrote:
>> On Sunday 25 December 2011 15:04:17 Dennis Sperlich wrote:
>>> On 25.12.2011 11:52, Mauro Carvalho Chehab wrote:
>>>> On 24-12-2011 19:58, Dennis Sperlich wrote:
>>>>> Hi,
>>>>>
>>>>> I have a Terratec Cinergy HTC Stick an tried the new support for the
>>>>> DVB-C part. It works for SD material (at least for free receivable
>>>>> stations, I tried afair only QAM64), but did not for HD stations
>>>>> (QAM256). I have only access to unencrypted ARD HD, ZDF HD and arte HD
>>>>> (via KabelDeutschland). The HD material was just digital artefacts, as
>>>>> far as mplayer could decode it. When I did a dumpstream and looked at
>>>>> the resulting file size I got something about 1MB/s which seems a
>>>>> little too low, because SD was already about 870kB/s. After looking
>>>>> around I found a solution in increasing the isoc_dvb_max_packetsize
>>>>> from 752 to 940 (multiple of 188). Then an HD stream was about 1.4MB/s
>>>>> and looked good. I'm not sure, whether this is the correct fix, but it
>>>>> works for me.
>>>>>
> Would not increasing EM28XX_DVB_NUM_BUFS currently set at 5 to say 10
> have a better effect?
This does not work, I just tried it.

Regards,
Dennis