I've been a long time SageTV/PVR-150 user and have loved my PVR card. Everything has worked great for over a year. However, I've wanted to free up the windows machine and decided to move my PVR to MythTV and ivtv in a new machine.
I've managed to get ivtv and MythTV configured and working, using the firmware listed on the wiki. However, I'm having some strange contrast issues. In fields of colour, perhaps in an animated show like Futurama, or on a news program with a clear graphic, I get a dancing mild snow, not really visible if you're more than 8 feet away from the monitor, but quite noticeable close up, almost as if there's a bad coaxial connection. It shows up quite well with MPEG encoding, as the codec doesn't seem to be able the flicker well. I can verify that moving the coaxial cable around doesn't change the image. Here's a short sample clip to demonstrate my problem: http://www.internetgenealogy.com/contrast.mpg Notice the dark "snow" effect on the solid background. I say it's a contrast flicker problem because it shows up on light backgrounds. On a black image it doesn't show up (too much). Cumulatively it's pretty annoying. I have tested that the problem is inside the mpeg file, by playing the MPEG both in windows and in linux. I have mpg files left over from SageTV and can verify the problem is within the mpeg itself. I am using the same co-axial cable as I did before. The only changes that have been made are moving the PVR card to a new computer running Slackware Linux/ivtv/MythTV instead of Windows XP/SageTV. I tried updating my drivers with the ones reccomended on the wiki and didn't see a noticeable change. Does anyone have any advice? I've noticed that ivtvctl uses different parameters than many of the examples listed here, so I've not played with it too much. I appreciate any suggestions. Thanks in advance. Here are relevant sections of various outputs: dmesg: ivtv: ==================== START INIT IVTV ==================== ivtv: version 0.8.0 (tagged release) loading ivtv: Linux version: 2.6.18.2 mod_unload K7 REGPARM gcc-3.4 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 WinTV PVR-150 card (cx23416 based) ACPI: PCI Interrupt Link [APC2] enabled at IRQ 17 ACPI: PCI Interrupt 0000:04:09.0[A] -> Link [APC2] -> GSI 17 (level, low) -> IRQ 21 ivtv0: Unreasonably low latency timer, setting to 64 (was 32) ivtv0: loaded v4l-cx2341x-enc.fw firmware (262144 bytes) tveeprom 0-0050: Hauppauge model 26032, rev C199, serial# 7847215 tveeprom 0-0050: tuner model is TCL 2002N 5H (idx 99, 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 tuner 0-0061: chip found @ 0xc2 (ivtv i2c driver #0) cx25840 0-0044: cx25841-23 found @ 0x88 (ivtv i2c driver #0) cx25840 0-0044: loaded v4l-cx25840.fw firmware (14264 bytes) wm8775 0-001b: chip found @ 0x36 (ivtv i2c driver #0) ivtv0: Encoder revision: 0x02050032 ivtv0: Registered device video0 for encoder MPEG ivtv0: Registered device video32 for encoder YUV ivtv0: Registered device vbi0 for encoder VBI ivtv0: Registered device video24 for encoder PCM audio tuner 0-0061: type set to 50 (TCL 2002N) ivtv0: Initialized Hauppauge WinTV PVR-150, card #0 ivtv: ==================== END INIT IVTV ==================== lspci -v: 04:09.0 Multimedia video controller: Internext Compression Inc iTVC16 (CX23416) MPEG-2 Encoder (rev 01) Subsystem: Hauppauge computer works Inc. WinTV PVR 150 Flags: bus master, medium devsel, latency 64, IRQ 21 Memory at f4000000 (32-bit, prefetchable) [size=64M] Capabilities: [44] Power Management version 2 _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
