I am reposting my question about the ability to improve quality of the
video on certain channels. As my original post indicates, there are a
few channels where the quality of the output is grainy, a couple have
horizontal lines on screen. I have similar results using either my
nvidia card for output or the 350 card. I do record on some of these
channels, it looks worse than a VCR recording. The channels look fine
when viewing from cable TV. Most of them are lower number channels:
12,14,15,17. Any suggestions?
Thanks.
Here is my config:
OS - Fedora Core 4
Kernel: 2.6.14-1.1653_FC4
ivtv version 0.4.1
xdriver: 0.10.6
video resolution: 720x480
windows manager: KDE
CPU: AMD Athlon XP 3200+
Memory: 512 MB
Motherboard: Chaintech Summit 7NJL6
Video Card: nVidia Corporation NV18 GeForce 4 MX
Sound Card: SoundBlaster Audigy OEM
Video Capture Cards: 1 Hauppauge 350 card, 1 Hauppauge 500 card
Video Out: Hauppauge 350
US Cable TV
dmesg of ivtv modules:
Dec 29 20:59:50 mythtv kernel: ivtv: ==================== START INIT
IVTV ====================
Dec 29 20:59:50 mythtv kernel: ivtv: version 0.4.1 (tagged release) loading
Dec 29 20:59:50 mythtv kernel: ivtv: Linux version: 2.6.14-1.1653_FC4
686 REGPARM 4KSTACKS gcc-4.0
Dec 29 20:59:50 mythtv kernel: ivtv: In case of problems please
include the debug info between
Dec 29 20:59:50 mythtv kernel: ivtv: the START INIT IVTV and END INIT
IVTV lines, along with
Dec 29 20:59:50 mythtv kernel: ivtv: any module options, when mailing
the ivtv-users mailinglist.
Dec 29 20:59:50 mythtv kernel: ivtv0: Autodetected WinTV PVR 350 card
(cx23415 based)
Dec 29 20:59:50 mythtv kernel: ACPI: PCI Interrupt Link [LNK4] enabled at IRQ 11
Dec 29 20:59:50 mythtv kernel: ACPI: PCI Interrupt 0000:01:07.0[A] ->
Link [LNK4] -> GSI 11 (level, low) -> IRQ 11
Dec 29 20:59:50 mythtv kernel: ivtv0: Unreasonably low latency timer,
setting to 64 (was 32)
Dec 29 20:59:50 mythtv kernel: tveeprom: ivtv version
Dec 29 20:59:51 mythtv kernel: tveeprom: Hauppauge: model = 48132, rev
= J323, serial# = 2754911
Dec 29 20:59:51 mythtv kernel: tveeprom: tuner = Philips FM1236 (idx =
23, type = 2)
Dec 29 20:59:51 mythtv kernel: tveeprom: tuner fmt = NTSC(M) (eeprom =
0x08, v4l2 = 0x00001000)
Dec 29 20:59:51 mythtv kernel: tveeprom: audio processor = MSP4448 (type = 1b)
Dec 29 20:59:51 mythtv kernel: tveeprom: decoder processor = SAA7115 (type = 13)
Dec 29 20:59:51 mythtv kernel: ivtv0: i2c attach to card #0 ok
[client=tveeprom, addr=50]
Dec 29 20:59:51 mythtv kernel: tuner 0-0061: chip found @ 0xc2 (ivtv
i2c driver #0)
Dec 29 20:59:51 mythtv kernel: ivtv0: i2c attach to card #0 ok
[client=(tuner unset), addr=61]
Dec 29 20:59:51 mythtv kernel: saa7115 0-0021: ivtv driver
Dec 29 20:59:51 mythtv kernel: saa7115 0-0021: saa7115 found @ 0x42
(ivtv i2c driver #0)
Dec 29 20:59:51 mythtv kernel: ivtv0: i2c attach to card #0 ok
[client=saa7115, addr=21]
Dec 29 20:59:51 mythtv kernel: saa7127 0-0044: ivtv driver
Dec 29 20:59:51 mythtv kernel: saa7127 0-0044: saa7127 found @ 0x88
(ivtv i2c driver #0)
Dec 29 20:59:51 mythtv kernel: ivtv0: i2c attach to card #0 ok
[client=saa7127, addr=44]
Dec 29 20:59:51 mythtv kernel: msp3400 0-0040: ivtv driver
Dec 29 20:59:52 mythtv kernel: msp3400 0-0040: chip=MSP4448G-A2 +nicam
+simple +simpler +radio mode=simpler
Dec 29 20:59:52 mythtv kernel: ivtv0: i2c attach to card #0 ok
[client=MSP4448G-A2, addr=40]
Dec 29 20:59:52 mythtv kernel: msp3400 0-0040: msp34xxg daemon started
Dec 29 20:59:52 mythtv kernel: ivtv0: loaded v4l-cx2341x-enc.fw
firmware (262144 bytes)
Dec 29 20:59:52 mythtv kernel: ivtv0: loaded v4l-cx2341x-dec.fw
firmware (262144 bytes)
Dec 29 20:59:52 mythtv kernel: ivtv0: Encoder revision: 0x02040024
Dec 29 20:59:52 mythtv kernel: ivtv0 warning: Encoder Firmware can be
buggy, use version 0x02040011 or 0x02050032.
Dec 29 20:59:52 mythtv kernel: ivtv0: Decoder revision: 0x02020023
Dec 29 20:59:52 mythtv kernel: ivtv0: Allocate DMA encoder MPEG
stream: 128 x 32768 buffers (4096KB total)
Dec 29 20:59:52 mythtv kernel: ivtv0: Allocate DMA encoder YUV stream:
194 x 10800 buffers (2048KB total)
Dec 29 20:59:53 mythtv kernel: ivtv0: Allocate DMA encoder VBI stream:
120 x 17472 buffers (2048KB total)
Dec 29 20:59:53 mythtv kernel: ivtv0: Allocate DMA encoder PCM audio
stream: 455 x 4608 buffers (2048KB total)
Dec 29 20:59:53 mythtv kernel: ivtv0: Create encoder radio stream
Dec 29 20:59:53 mythtv kernel: ivtv0: Allocate DMA decoder MPEG
stream: 16 x 65536 buffers (1024KB total)
Dec 29 20:59:53 mythtv kernel: ivtv0: Allocate DMA decoder VBI stream:
512 x 2048 buffers (1024KB total)
Dec 29 20:59:53 mythtv kernel: ivtv0: Create decoder VOUT stream
Dec 29 20:59:53 mythtv kernel: ivtv0: Allocate DMA decoder YUV stream:
24 x 43200 buffers (1024KB total)
Dec 29 20:59:53 mythtv kernel: ivtv0: unable to open firmware
v4l-cx2341x-init-mpeg.bin
Dec 29 20:59:53 mythtv kernel: ivtv0: did you put the firmware in the
hotplug firmware directory?
Dec 29 20:59:53 mythtv kernel: ivtv0: failed to read mpeg decoder
initialisation file v4l-cx2341x-init-mpeg.bin
Dec 29 20:59:53 mythtv kernel: tuner 0-0061: type set to 2 (Philips
NTSC (FI1236,FM1236 and compatibles))
Dec 29 20:59:53 mythtv kernel: ivtv0: Initialized WinTV PVR 350, card #0
Dec 29 20:59:53 mythtv kernel: ivtv: ====================== NEXT
CARD ======================
Dec 29 20:59:53 mythtv kernel: ivtv1: Autodetected WinTV PVR 150 card
(cx23416 based)
Dec 29 20:59:53 mythtv kernel: ACPI: PCI Interrupt Link [LNK1] enabled at IRQ 9
Dec 29 20:59:53 mythtv kernel: PCI: setting IRQ 9 as level-triggered
Dec 29 20:59:53 mythtv kernel: ACPI: PCI Interrupt 0000:02:08.0[A] ->
Link [LNK1] -> GSI 9 (level, low) -> IRQ 9
Dec 29 20:59:53 mythtv kernel: ivtv1: Unreasonably low latency timer,
setting to 64 (was 32)
Dec 29 20:59:53 mythtv kernel: tveeprom: Second (radio) tuner idx 101
Dec 29 20:59:53 mythtv kernel: tveeprom: ivtv version
Dec 29 20:59:53 mythtv kernel: tveeprom: Hauppauge: model = 23552, rev
= D492, serial# = 7894323
Dec 29 20:59:53 mythtv kernel: tveeprom: tuner = Philips FQ1236A MK4
(idx = 92, type = 57)
Dec 29 20:59:53 mythtv kernel: tveeprom: tuner fmt = NTSC(M) (eeprom =
0x08, v4l2 = 0x00001000)
Dec 29 20:59:53 mythtv kernel: tveeprom: audio processor = CX25843 (type = 25)
Dec 29 20:59:53 mythtv kernel: tveeprom: decoder processor = CX25843 (type = 1e)
Dec 29 20:59:53 mythtv kernel: ivtv1: i2c attach to card #1 ok
[client=tveeprom, addr=50]
Dec 29 20:59:53 mythtv kernel: tuner 1-0060: chip found @ 0xc0 (ivtv
i2c driver #1)
Dec 29 20:59:53 mythtv kernel: tuner 1-0060: TEA5767 detected.
Dec 29 20:59:53 mythtv kernel: ivtv1: i2c attach to card #1 ok
[client=(tuner unset), addr=60]
Dec 29 20:59:53 mythtv kernel: tuner 1-0060: type set to 62 (Philips
TEA5767HN FM Radio)
Dec 29 20:59:53 mythtv kernel: tuner 1-0061: chip found @ 0xc2 (ivtv
i2c driver #1)
Dec 29 20:59:53 mythtv kernel: ivtv1: i2c attach to card #1 ok
[client=(tuner unset), addr=61]
Dec 29 20:59:53 mythtv kernel: tda9885/6/7: chip found @ 0x86
Dec 29 20:59:53 mythtv kernel: ivtv1: i2c attach to card #1 ok
[client=tda9887, addr=43]
Dec 29 20:59:53 mythtv kernel: ivtv1: This is the first unit of a PVR500
Dec 29 20:59:53 mythtv kernel: cx25840 1-0044: ivtv driver
Dec 29 20:59:53 mythtv kernel: cx25840 1-0044: cx25843-23 found @ 0x88
(ivtv i2c driver #1)
Dec 29 20:59:53 mythtv kernel: cx25840 1-0044: unable to open firmware
v4l-cx25840.fw
Dec 29 20:59:53 mythtv kernel: ivtv1: i2c attach to card #1 ok
[client=cx25840, addr=44]
Dec 29 20:59:53 mythtv kernel: wm8775 1-001b: ivtv driver
Dec 29 20:59:53 mythtv kernel: wm8775 1-001b: chip found @ 0x36 (ivtv
i2c driver #1)
Dec 29 20:59:53 mythtv kernel: ivtv1: i2c attach to card #1 ok
[client=wm8775, addr=1b]
Dec 29 20:59:53 mythtv kernel: ivtv1: Detected a TEA5767 radio tuner.
Enabling radio support.
Dec 29 20:59:53 mythtv kernel: ivtv1: loaded v4l-cx2341x-enc.fw
firmware (262144 bytes)
Dec 29 20:59:53 mythtv kernel: ivtv1: Encoder revision: 0x02040024
Dec 29 20:59:53 mythtv kernel: ivtv1 warning: Encoder Firmware can be
buggy, use version 0x02040011 or 0x02050032.
Dec 29 20:59:53 mythtv kernel: ivtv1: Allocate DMA encoder MPEG
stream: 128 x 32768 buffers (4096KB total)
Dec 29 20:59:53 mythtv kernel: ivtv1: Allocate DMA encoder YUV stream:
194 x 10800 buffers (2048KB total)
Dec 29 20:59:53 mythtv kernel: ivtv1: Allocate DMA encoder VBI stream:
120 x 17472 buffers (2048KB total)
Dec 29 20:59:53 mythtv kernel: ivtv1: Allocate DMA encoder PCM audio
stream: 455 x 4608 buffers (2048KB total)
Dec 29 20:59:54 mythtv kernel: ivtv1: Create encoder radio stream
Dec 29 20:59:54 mythtv kernel: tuner 1-0061: type set to 57 (Philips
FQ1236A MK4)
Dec 29 20:59:54 mythtv kernel: ivtv1: Initialized WinTV PVR 500 (unit
#1), card #1
Dec 29 20:59:54 mythtv kernel: ivtv: ====================== NEXT
CARD ======================
Dec 29 20:59:54 mythtv kernel: ivtv2: Autodetected WinTV PVR 150 card
(cx23416 based)
Dec 29 20:59:54 mythtv kernel: ACPI: PCI Interrupt Link [LNK2] enabled at IRQ 5
Dec 29 20:59:54 mythtv kernel: ACPI: PCI Interrupt 0000:02:09.0[A] ->
Link [LNK2] -> GSI 5 (level, low) -> IRQ 5
Dec 29 20:59:54 mythtv kernel: ivtv2: Unreasonably low latency timer,
setting to 64 (was 32)
Dec 29 20:59:54 mythtv kernel: tveeprom: Second (radio) tuner idx 101
Dec 29 20:59:54 mythtv kernel: tveeprom: ivtv version
Dec 29 20:59:54 mythtv kernel: tveeprom: Hauppauge: model = 23552, rev
= D492, serial# = 7894323
Dec 29 20:59:54 mythtv kernel: tveeprom: tuner = Philips FQ1236A MK4
(idx = 92, type = 57)
Dec 29 20:59:54 mythtv kernel: tveeprom: tuner fmt = NTSC(M) (eeprom =
0x08, v4l2 = 0x00001000)
Dec 29 20:59:54 mythtv kernel: tveeprom: audio processor = CX25843 (type = 25)
Dec 29 20:59:54 mythtv kernel: tveeprom: decoder processor = CX25843 (type = 1e)
Dec 29 20:59:54 mythtv kernel: ivtv2: i2c attach to card #2 ok
[client=tveeprom, addr=50]
Dec 29 20:59:54 mythtv kernel: tuner 2-0061: chip found @ 0xc2 (ivtv
i2c driver #2)
Dec 29 20:59:54 mythtv kernel: ivtv2: i2c attach to card #2 ok
[client=(tuner unset), addr=61]
Dec 29 20:59:54 mythtv kernel: tda9885/6/7: chip found @ 0x86
Dec 29 20:59:54 mythtv kernel: ivtv2: i2c attach to card #2 ok
[client=tda9887, addr=43]
Dec 29 20:59:54 mythtv kernel: cx25840 2-0044: ivtv driver
Dec 29 20:59:54 mythtv kernel: cx25840 2-0044: cx25843-23 found @ 0x88
(ivtv i2c driver #2)
Dec 29 20:59:54 mythtv kernel: cx25840 2-0044: unable to open firmware
v4l-cx25840.fw
Dec 29 20:59:54 mythtv kernel: ivtv2: i2c attach to card #2 ok
[client=cx25840, addr=44]
Dec 29 20:59:54 mythtv kernel: wm8775 2-001b: ivtv driver
Dec 29 20:59:54 mythtv kernel: wm8775 2-001b: chip found @ 0x36 (ivtv
i2c driver #2)
Dec 29 20:59:54 mythtv kernel: ivtv2: i2c attach to card #2 ok
[client=wm8775, addr=1b]
Dec 29 20:59:54 mythtv kernel: ivtv2: This is the second unit of a PVR500
Dec 29 20:59:54 mythtv kernel: ivtv2: Correcting tveeprom data: no
radio present on second unit
Dec 29 20:59:54 mythtv kernel: ivtv2: loaded v4l-cx2341x-enc.fw
firmware (262144 bytes)
Dec 29 20:59:54 mythtv kernel: ivtv2: Encoder revision: 0x02040024
Dec 29 20:59:54 mythtv kernel: ivtv2 warning: Encoder Firmware can be
buggy, use version 0x02040011 or 0x02050032.
Dec 29 20:59:54 mythtv kernel: ivtv2: Allocate DMA encoder MPEG
stream: 128 x 32768 buffers (4096KB total)
Dec 29 20:59:54 mythtv kernel: ivtv2: Allocate DMA encoder YUV stream:
194 x 10800 buffers (2048KB total)
Dec 29 20:59:54 mythtv kernel: ivtv2: Allocate DMA encoder VBI stream:
120 x 17472 buffers (2048KB total)
Dec 29 20:59:54 mythtv kernel: ivtv2: Allocate DMA encoder PCM audio
stream: 455 x 4608 buffers (2048KB total)
Dec 29 20:59:54 mythtv kernel: tuner 2-0061: type set to 57 (Philips
FQ1236A MK4)
Dec 29 20:59:54 mythtv kernel: ivtv2: Initialized WinTV PVR 500 (unit
#2), card #2
Dec 29 20:59:54 mythtv kernel:
ivtv: ==================== END INIT IVTV ====================
lspci -v:
01:07.0 Multimedia video controller: Internext Compression Inc iTVC15
MPEG-2 Encoder (rev 01)
Subsystem: Hauppauge computer works Inc. WinTV PVR-350
Flags: bus master, medium devsel, latency 64, IRQ 11
Memory at e0000000 (32-bit, prefetchable) [size=64M]
Capabilities: [44] Power Management version 2
02:08.0 Multimedia video controller: Internext Compression Inc iTVC16
(CX23416) MPEG-2 Encoder (rev 01)
Subsystem: Hauppauge computer works Inc.: Unknown device e807
Flags: bus master, medium devsel, latency 64, IRQ 9
Memory at d8000000 (32-bit, prefetchable) [size=64M]
Capabilities: [44] Power Management version 2
02:09.0 Multimedia video controller: Internext Compression Inc iTVC16
(CX23416) MPEG-2 Encoder (rev 01)
Subsystem: Hauppauge computer works Inc.: Unknown device e817
Flags: bus master, medium devsel, latency 64, IRQ 5
Memory at dc000000 (32-bit, prefetchable) [size=64M]
Capabilities: [44] Power Management version 2
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