On Tue, Mar 8, 2011 at 8:44 PM, Dirk Beer <[email protected]> wrote: > I'm having problems with image quality with ivtvfb kernel module.
I did some more troubleshooting, and it looks like the problem is with ivtv and the S-Video output. dd if=/dev/video0 of=test.mpg looks good. dd if=/dev/video0 of=/dev/video16 bs=64k looks bad on S-Video 1: grainy and desaturated color. but good on Composite 1. I'm using: * kernel 2.6.26-ARCH i686 (old because the Arch-based LinHES R6 uses only that kernel) * PVR-350 * recommended firmware from ivtvdriver.org * S-video 1 output or Composite 1 output This identical hardware (including cables, tv, etc) gave me a nice picture recently, so I don't think it is hardware related. I can use Composite for now, but would like to use S-Video since it normally has slightly better video quality. Does anyone have any suggestions of how to fix S-Video? Dirk ----------------------------------------- [root@obmyth ~]# dmesg|grep ivtv ivtv: Start initialization, version 1.4.0 ivtv0: Initializing card #0 ivtv0: Autodetected Hauppauge card (cx23415 based) ivtv 0000:01:06.0: PCI INT A -> Link[APC3] -> GSI 18 (level, high) -> IRQ 18 ivtv0: Unreasonably low latency timer, setting to 64 (was 32) ivtv0: Autodetected Hauppauge WinTV PVR-350 saa7115 2-0021: saa7115 found (1f7115d0e100000) @ 0x42 (ivtv i2c driver #0) saa7127 2-0044: saa7129 found @ 0x88 (ivtv i2c driver #0) msp3400 2-0040: MSP4448G-A2 found @ 0x80 (ivtv i2c driver #0) tuner 2-0043: chip found @ 0x86 (ivtv i2c driver #0) tuner 2-0061: chip found @ 0xc2 (ivtv i2c driver #0) ivtv0: Registered device video0 for encoder MPG (4096 kB) ivtv0: Registered device video32 for encoder YUV (2048 kB) ivtv0: Registered device vbi0 for encoder VBI (1024 kB) ivtv0: Registered device video24 for encoder PCM (320 kB) ivtv0: Registered device radio0 for encoder radio ivtv0: Registered device video16 for decoder MPG (1024 kB) ivtv0: Registered device vbi8 for decoder VBI (64 kB) ivtv0: Registered device vbi16 for decoder VOUT ivtv0: Registered device video48 for decoder YUV (1024 kB) ivtv0: Initialized card #0: Hauppauge WinTV PVR-350 ivtv: End initialization ivtv 0000:01:06.0: firmware: requesting v4l-cx2341x-enc.fw ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes) ivtv 0000:01:06.0: firmware: requesting v4l-cx2341x-dec.fw ivtv0: Loaded v4l-cx2341x-dec.fw firmware (262144 bytes) ivtv0: Encoder revision: 0x02060039 ivtv0: Decoder revision: 0x02020023 ivtv 0000:01:06.0: firmware: requesting v4l-cx2341x-init.mpg ivtv0: Loaded v4l-cx2341x-init.mpg firmware (155648 bytes) _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
