diff -Naur linux-3.7.9/drivers/media/usb/dvb-usb/pctv452e.c linux-3.7.9.patch/drivers/media/usb/dvb-usb/pctv452e.c
--- linux-3.7.9/drivers/media/usb/dvb-usb/pctv452e.c    2013-01-11 18:19:28.000000000 +0100
+++ linux-3.7.9.patch/drivers/media/usb/dvb-usb/pctv452e.c      2013-01-16 10:35:01.131342123 +0100
@@ -995,11 +995,11 @@
			/* parameter for the MPEG2-data transfer */
			.stream = {
				.type = USB_ISOC,
-				.count = 7,
+				.count = 4,
				.endpoint = 0x02,
				.u = {
					.isoc = {
-						.framesperurb = 4,
+						.framesperurb = 64,
						.framesize = 940,
						.interval = 1
					}