audio codecs with multimedia board

  • Thread starter Thread starter Mike De Petris
  • Start date Start date
M

Mike De Petris

Hi, as written in Hauppauge WinTV HVR-4000 thread I have problems
listening to tv and FM radio analog channels, audio is bad and jerky.

I would like to check what software is involved in the audio
processing, as the same problem does not happen with digital tv and
radio channels. I see I can use gspot ffshow and a lot of codec-
related tools fon my xp x64 but all seem oriented at multimedia avi-
wav files, how can I analyze the the audio data stream from the pci
board and drivers?

Note that that board has no audio cable, all the video and audio data
flows through pci and is filtered and decoded by software.

I had a similar bad-audio experience when I installed ffshow filters
for x64, but to be sure I should be able to switch the decoding
software to see if anything changes.

Thank you.
 
Mike,
I cannot find your card in Hauppage web site.
http://www.hauppage.com/site/products/prods_hvr_internal.html
so I am just guessing.
Audio processing is up to the card software so I would check for its latest
version.
On the other hand it seems that you only have problems with "aerial"
reception, i.e.: TV and FM radio.
Do you have a good external antenna for both?
I smell signal level issues here, considering that you don't have issues
with digital tv and radio channels.
Carlos

"Mike De Petris" wrote:

> Hi, as written in Hauppauge WinTV HVR-4000 thread I have problems
> listening to tv and FM radio analog channels, audio is bad and jerky.
>
> I would like to check what software is involved in the audio
> processing, as the same problem does not happen with digital tv and
> radio channels. I see I can use gspot ffshow and a lot of codec-
> related tools fon my xp x64 but all seem oriented at multimedia avi-
> wav files, how can I analyze the the audio data stream from the pci
> board and drivers?
>
> Note that that board has no audio cable, all the video and audio data
> flows through pci and is filtered and decoded by software.
>
> I had a similar bad-audio experience when I installed ffshow filters
> for x64, but to be sure I should be able to switch the decoding
> software to see if anything changes.
>
> Thank you.
>
 
On Aug 20, 1:00 am, Carlos <Car...@discussions.microsoft.com> wrote:
> I cannot find your card in Hauppage web site.http://www.hauppage.com/site/products/prods_hvr_internal.html
> so I am just guessing.

you can find it on european countries only

> Audio processing is up to the card software so I would check for its latest
> version.

already done and contacted hauppauge assistance, waiting for answer,
but you know it's holydays time

> On the other hand it seems that you only have problems with "aerial"
> reception, i.e.: TV and FM radio.

Aerial but analog only, I receive also digital channels on same aerial
antenna without this problem.

> Do you have a good external antenna for both?

Yes it's a new building with a new antenna and digital terrestrial
(dvb-T dtt) channels are perfect. FM radio has it's own typical 1.5m
cable connected to the board so I exclude a reception problem, tested
on another pc all works well with godd audio quality for all 4 kind of
tuners.

> I smell signal level issues here, considering that you don't have issues
> with digital tv and radio channels.

:-(
 
I've found this paragraph on the virtualdub site, that make me think
about some hardware-firmware-bios compatibility iussue between
motherboard, audio and wintv board.

Given all drivers and BIOS are up to date, I see again I could only
try different pci audio boards.
----------------------------------------
I get sound, but it has cracks and pops in it.
My video has greenish lines in it.
Occasionally, I see thin horizontal strips in the captured video that
looks like they came from the last frame???

No one has a rock-solid answer for why these problems occur, but
it appears to be caused by contention on the PCI bus, which then
prevents the sound card and video capture devices from emptying their
buffers in time. This problem is reported more frequently on
motherboards that have a VIA chipset, or in systems that have a
SoundBlaster Live! sound card. In the former case, try upgrading your
VIA 4-in-1 drivers first, and if that is not sufficient, check for a
motherboard BIOS update that specifically addresses your problem. As
for the Live!, the Creative driver is known to cause problems by
lowering the latency timer of the PCI bus. (The result is similar
that of making the red lights appear every ten seconds at a four-way
intersection.) In that case, try installing the Microsoft drivers
instead.

Also, check the websites for the hardware manufacturers to see if
they have utilities which may help. For instance, Pinnacle has a PCI
adjustment utility for some of their cards.
 
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