On Sun, Mar 22, 2009 at 06:16:29PM +0100, Martin Emrich wrote:
Heinrich Langos schrieb:
I ran a couple of tests with a different DVB-T USB stick. The rather old "Fujitsu-Siemens DVB-T Mobile TV". That one turns out to need a lot less system resources. It also transfers the whole transport stream (several video and audio streams) over the USB and leaves demuxing to the host. So we are not comparing apples and oranges.
I borrowed an af9015 device some time ago, and the owner told me that the primary problem with it is that it has no hardware PID filter. So even if VDR is only doing EPG scanning, the complete multiplex is congesting the USB link. Maybe your Fujitsu-Siemens receiver has a hardware PID filter...
Hi Martin,
I am pretty sure the Siemens stick doesn't filter PIDs. The easy way to find out about that is to look at http://www.linuxtv.org/wiki/index.php/DVB-T_USB_Devices and check if the device works with usb 1.1 or absolutely needs 2.0.
Also the system load doesn't seem to differ a lot between vdr being mostly idle and recording.
I'll get my hands onto a "Toshiba USB DVB-T Tuner PX1211E-1TVD" this week. That one should have a pid filter as it seems to support USB 1.1 as well as 2.0.
cheers -henrik