Svideo input of M780 avermedia and sound

Mangavin · 2007-09-22, 02:45

TV-Server Version:
MediaPortal Version: RC2 + 1597
MediaPortal Skin:
Windows Version: XP Pro SP2
CPU Type: Intel E6650
HDD: (WD 500 Go) x 2
Memory: 2 Go
Motherboard: Asus PKE/wifi
Motherboard Chipset:
Motherboard Bios:
Video Card: Asus 7600Gs
Video Card Driver:
Sound Card: SoundMax HDaudio
Sound Card AC3:
Sound Card Driver: 5.10.1.6110
1. TV Card: Avermedia Combo M780
1. TV Card Type:
1. TV Card Driver: 2.5.0.14
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec:
MPEG2 Audio Codec:
Satelite/CableTV Provider:
HTPC Case: GD01S-MXR
Cooling:
Power Supply:
Remote: Logitech 550
TV:
TV - HTPC Connection:

Hi

I've got an Avermedia M780 TV turner. For the analog channel there is no problem. I've got good pictures and good sound. But for the svideo input the sound is very low. To low for watching TV.... I managed one time to have a good sound (not so loud than analog channel... but it was suffisant)... Now I put a fresh XP and no way to get it back.
Thank you

Mangavin · 2007-09-23, 00:36

Hi

ok I found the solution. It was quit easy. I had to go in the set up of my soundcard. Then I went to the record set up to increase the mixing control volume.

Mangavin · 2007-09-24, 14:05

That's wrong... I install a new ghost of XP... Then I did the same set up and nothing...

I search a long time... And it seems to be the "normalize" option wich give me a correct sound... But the svideo sound is not as clear as for analog channels.

I will do some tests after.

cybrmage · 2007-09-24, 23:01

This sounds like the same problem that the hauppauge cards had about 18 months ago....

The problem is that the audio is encoded into the mpeg file by the hardware encoder on the card... The windows sound recording system is not used... so by the time you are playing it back, it is too late to do any processing of it, which is why you get poor audio quality at volume levels that allow you to listen to it....

The root cause is the driver for the card... it does not apply the correct gain to the external audio signal to give the correct audio levels in the encoded mpeg stream...

Your only solution is to contact AverMedia Support and report the problem... and hope that they are responsive with driver fixes...

Regards,
CybrMage

Mangavin · 2007-09-25, 01:18

Hi CybrMage (I do it a little...

) Happy to see you

I've wrote yesterday to Avermedia they respond today

Quote:

Hi,

Check your sound mixer and make sure the line in is selected and volume
turned
up.

Then I answered with this screen print

cybrmage · 2007-09-25, 02:20

It's mind boggling how little the people who answer tech support email actually know about how their hardware works.

A card with a hardware encoder does not use the windows sound syste... period. The line input setting makes no difference to the card. You could have it set to record from a web cam microphone for all it cares...

If they keep on with this, insist on being escalated to the tech support department... someone who actually knows how the product works...

Mangavin · 2007-09-25, 02:31

You're wright CybrMage, I've already test the different controls. Then only wave control and master volume change de sound.

They reply in 10 minutes to the second message. Then I've tried another RCA cable (direct one) .... And with the normalize option I can have the same volume than analogic channel without noise this time. I wrote again and if there is no futher driver. I will be content with this solution.

2007-09-22, 02:45	#1 (permalink)
Mangavin Portal Member Join Date: Aug 2006 Location: Quebec Age: 40 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts Country: My System	Svideo input of M780 avermedia and sound TV-Server Version: MediaPortal Version: RC2 + 1597 MediaPortal Skin: Windows Version: XP Pro SP2 CPU Type: Intel E6650 HDD: (WD 500 Go) x 2 Memory: 2 Go Motherboard: Asus PKE/wifi Motherboard Chipset: Motherboard Bios: Video Card: Asus 7600Gs Video Card Driver: Sound Card: SoundMax HDaudio Sound Card AC3: Sound Card Driver: 5.10.1.6110 1. TV Card: Avermedia Combo M780 1. TV Card Type: 1. TV Card Driver: 2.5.0.14 2. TV Card: 2. TV Card Type: 2. TV Card Driver: 3. TV Card: 3. TV Card Type: 3. TV Card Driver: 4. TV Card: 4. TV Card Type: 4. TV Card Driver: MPEG2 Video Codec: MPEG2 Audio Codec: Satelite/CableTV Provider: HTPC Case: GD01S-MXR Cooling: Power Supply: Remote: Logitech 550 TV: TV - HTPC Connection: Hi I've got an Avermedia M780 TV turner. For the analog channel there is no problem. I've got good pictures and good sound. But for the svideo input the sound is very low. To low for watching TV.... I managed one time to have a good sound (not so loud than analog channel... but it was suffisant)... Now I put a fresh XP and no way to get it back. Thank you

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2007-09-23, 00:36	#2 (permalink)
Mangavin Portal Member Join Date: Aug 2006 Location: Quebec Age: 40 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts Country: My System	Hi ok I found the solution. It was quit easy. I had to go in the set up of my soundcard. Then I went to the record set up to increase the mixing control volume.

2007-09-24, 14:05	#3 (permalink)
Mangavin Portal Member Join Date: Aug 2006 Location: Quebec Age: 40 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts Country: My System	That's wrong... I install a new ghost of XP... Then I did the same set up and nothing... I search a long time... And it seems to be the "normalize" option wich give me a correct sound... But the svideo sound is not as clear as for analog channels. I will do some tests after.

2007-09-24, 23:01	#4 (permalink)
cybrmage Portal Developer Join Date: May 2007 Posts: 498 Thanks: 1 Thanked 83 Times in 39 Posts Country:	This sounds like the same problem that the hauppauge cards had about 18 months ago.... The problem is that the audio is encoded into the mpeg file by the hardware encoder on the card... The windows sound recording system is not used... so by the time you are playing it back, it is too late to do any processing of it, which is why you get poor audio quality at volume levels that allow you to listen to it.... The root cause is the driver for the card... it does not apply the correct gain to the external audio signal to give the correct audio levels in the encoded mpeg stream... Your only solution is to contact AverMedia Support and report the problem... and hope that they are responsive with driver fixes... Regards, CybrMage

2007-09-25, 02:20	#6 (permalink)
cybrmage Portal Developer Join Date: May 2007 Posts: 498 Thanks: 1 Thanked 83 Times in 39 Posts Country:	It's mind boggling how little the people who answer tech support email actually know about how their hardware works. A card with a hardware encoder does not use the windows sound syste... period. The line input setting makes no difference to the card. You could have it set to record from a web cam microphone for all it cares... If they keep on with this, insist on being escalated to the tech support department... someone who actually knows how the product works...

2007-09-25, 02:31	#7 (permalink)
Mangavin Portal Member Join Date: Aug 2006 Location: Quebec Age: 40 Posts: 26 Thanks: 1 Thanked 0 Times in 0 Posts Country: My System	You're wright CybrMage, I've already test the different controls. Then only wave control and master volume change de sound. They reply in 10 minutes to the second message. Then I've tried another RCA cable (direct one) .... And with the normalize option I can have the same volume than analogic channel without noise this time. I wrote again and if there is no futher driver. I will be content with this solution.