On Wed, 2008-05-07 at 19:06 -0300, Kevin Blair wrote: > Hi, > > im having the bad tinny audio issue on my mythtv system it has only > started recently, and is intermittent so some recordings are fine some > have bad audio, for live playback majortiy of the time audio is fine > only after going in and out and in and out of live tv sevral times did i > get the audio tinny, with no pattern its hard to predict or reproduce on > command, the source is svid and composite. cat /dev/video0 seems to test > out fine, how ever since live tv playback works most of the time i cant > say for sure that its working. > > i am useing gentoo linux and ivtv v1.0.3 i was useing 2.6.24 and i > upgraded to 2.6.25 kernel but the problem remains, due to hardware > compatibility i cant downgrade kernel. i tried adding tuner=50 to module > options with no success. > executing v4l2-ctl --set-audio-input 0 ; v4l2-ctl --set-audio-input 1 > when i get mythtv audio playback bad the audio goes to normal, which > doesnt help fix the problem for recordings.
What is the difference, if any, between the output of $ v4l2-ctl --log-status when the audio is good and when the audio is bad on the input same source. Also can you clarify: does this happens with tuner audio only, audio line in only, or both? -Andy > my tuner is as fallows from lspci -v > 05:06.0 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 16 > Memory at e4000000 (32-bit, prefetchable) [size=64M] > Capabilities: [44] Power Management version 2 > Kernel driver in use: ivtv > Kernel modules: ivtv > > dmesg output from ivtv being loaded is as fallows: > > ivtv: Start initialization, version 1.2.0 > ivtv0: Initializing card #0 > ivtv0: Autodetected Hauppauge card (cx23416 based) > ACPI: PCI Interrupt Link [APC1] enabled at IRQ 16 > ACPI: PCI Interrupt 0000:05:06.0[A] -> Link [APC1] -> GSI 16 (level, > low) -> IRQ 16 > ivtv0: Unreasonably low latency timer, setting to 64 (was 32) > tveeprom 2-0050: Hauppauge model 26552, rev F068, serial# 10426282 > tveeprom 2-0050: tuner model is LG TAPE H001F MK3 (idx 68, type 47) > tveeprom 2-0050: TV standards NTSC(M) (eeprom 0x08) > tveeprom 2-0050: audio processor is CX25843 (idx 37) > tveeprom 2-0050: decoder processor is CX25843 (idx 30) > tveeprom 2-0050: has radio, has no IR receiver, has no IR transmitter > ivtv0: Autodetected Hauppauge WinTV PVR-150 > cx25840 2-0044: cx25843-24 found @ 0x88 (ivtv i2c driver #0) > tuner 2-0043: chip found @ 0x86 (ivtv i2c driver #0) > tda9887 2-0043: tda988[5/6/7] found > tuner 2-0061: chip found @ 0xc2 (ivtv i2c driver #0) > wm8775 2-001b: chip found @ 0x36 (ivtv i2c driver #0) > tuner-simple 2-0061: type set to 50 (TCL 2002N) > 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: Initialized card #0: Hauppauge WinTV PVR-150 > ivtv: End initialization > > and firmware > ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes) > ivtv0: Encoder revision: 0x02060039 > cx25840 2-0044: loaded v4l-cx25840.fw firmware (16382 bytes) > > > any suggestions would be much appreciated. > > Kevin _______________________________________________ ivtv-users mailing list ivtv-users@ivtvdriver.org http://ivtvdriver.org/mailman/listinfo/ivtv-users
