Hi! I'm getting funny "jitter" in my ivtv recordings from my
PVR-150.
( here's a couple-second (2MB) snippet that demonstrates it:
http://robstarling.org/misc/ivtv-twitch.mpg )
Does that look like an ivtv problem, or just a signal strength
problem? It happens both in mythtv and with dd if=/dev/video0
This is on a 1.3GHz Athlon and ivtv is on an interrupt all by
itself:
# cat /proc/interrupts
CPU0
0: 226037026 IO-APIC-edge timer
1: 17779 IO-APIC-edge i8042
7: 2 IO-APIC-edge parport0
8: 1 IO-APIC-edge rtc
9: 0 IO-APIC-level acpi
12: 32692 IO-APIC-edge i8042
14: 380451 IO-APIC-edge ide0
15: 573 IO-APIC-edge ide1
169: 0 IO-APIC-level uhci_hcd:usb1
177: 12608475 IO-APIC-level uhci_hcd:usb2, eth1
185: 0 IO-APIC-level uhci_hcd:usb3, uhci_hcd:usb4
193: 77137 IO-APIC-level ehci_hcd:usb5, ohci1394, CMI8738-MC6
201: 205723 IO-APIC-level ivtv0
NMI: 0
LOC: 226032670
ERR: 0
MIS: 0
My dmesg snippet is here:
ivtv: ==================== START INIT IVTV ====================
ivtv: version 0.10.1 (tagged release) loading
ivtv: Linux version: 2.6.18-3-k7 SMP mod_unload K7 REGPARM gcc-4.1
ivtv: In case of problems please include the debug info between
ivtv: the START INIT IVTV and END INIT IVTV lines, along with
ivtv: any module options, when mailing the ivtv-users mailinglist.
ivtv0: Autodetected Hauppauge card (cx23416 based)
ACPI: PCI Interrupt 0000:00:0f.0[A] -> GSI 18 (level, low) -> IRQ 201
ivtv0: Unreasonably low latency timer, setting to 64 (was 32)
irda_init()
NET: Registered protocol family 23
ivtv0: loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
input: ImPS/2 Generic Wheel Mouse as /class/input/input2
ivtv0: Encoder revision: 0x02060039
tveeprom 0-0050: Hauppauge model 26132, rev G1B2, serial# 9831694
tveeprom 0-0050: tuner model is TCL M2523_5N_E (idx 112, type 50)
tveeprom 0-0050: TV standards NTSC(M) (eeprom 0x08)
tveeprom 0-0050: audio processor is CX25841 (idx 35)
tveeprom 0-0050: decoder processor is CX25841 (idx 28)
tveeprom 0-0050: has no radio, has IR remote
ivtv0: Autodetected Hauppauge WinTV PVR-150
ivtv0: reopen i2c bus for IR-blaster support
tuner 0-0061: chip found @ 0xc2 (ivtv i2c driver #0)
cx25840 0-0044: cx25841-23 found @ 0x88 (ivtv i2c driver #0)
ts: Compaq touchscreen protocol output
cx25840 0-0044: loaded v4l-cx25840.fw firmware (16382 bytes)
wm8775 0-001b: chip found @ 0x36 (ivtv i2c driver #0)
ivtv0: Registered device video0 for encoder MPEG (4 MB)
ivtv0: Registered device video32 for encoder YUV (2 MB)
ivtv0: Registered device vbi0 for encoder VBI (1 MB)
ivtv0: Registered device video24 for encoder PCM audio (1 MB)
tuner 0-0061: type set to 50 (TCL 2002N)
ivtv0: Initialized Hauppauge WinTV PVR-150, card #0
ivtv: ==================== END INIT IVTV ====================
Thanks!
--Rob
--
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