Repeating Sound, Echo - Please Help (1 Viewer)

[Steve Clarke]

MediaPortal Version: 0.2.0.0 and 0.2.0.4
Windows Version: XP - SP2
CPU Type: Pentium 3.2 Ghz HT
HDD: 150GB
Memory: 1 GB
Video Card: ATI Radeon X800XT
Sound Card: Sound Blaster Live - 24 Bit
1. TV Card: TView 99 - CPH05X
1. TV Card Type: BT878 Chipset
1. TV Card Driver: Askey - Vendor drivers
MPEG2 Video Codec: Nvidia Decoder
MPEG2 Audio Codec: Nvidia Decoder

Hello,

I have been trying to get my TV Card working with MP. I can now successfully see, change channels etc. The problem is the sync between Audio and Video.

I have tried all the Codecs available for Video and Audio and various combination of them. The most promising is the Nvidia Pure codecs. The problem I have however is that there appears to be a sound echo. I will hear a sound that is perfectly in sync with the video but at the same time there is a previous bit of Audio playing as well. I would like to remove the echo leaving only the live sound.

My TV card is a software decoder, the audio comes in from the Conexant TV Card and into the line-in audio on my Sound Blaster - Live 24 Bit.

When I was looking at the Graph last night - connecting the a running graph, there appeared to be two graphs to select from. Don't know if this is a red herring or not or why this was happening. Both graphs appeared to be the same.

The link below points to a previous Post showing some more specs on my Card Setup etc. There is a picture of the graph, but it will be pointing now to the Nvidia codecs instead of the MPA and Dscaler.

https://forum.team-mediaportal.com/showthread.php?t=10567

Any help will be appreciated.

Thanks
Steve

 

[Paranoid Delusion]

With MP running go to settings/TV/audio renderer and make sure default sound device selected or try the SB24, but this one usually gives a noticeable sound sync difference, so the first one should be the choice.

 

[Steve Clarke]

Thanks for your suggestion Ray. I found out it the issued lay with my TV Card configuration. It has two ways to get sound 1) Onboard 2) via a physical cable from the line-out on the TV Card to the Line-In on the sound card. Apparently both were working. I need to isolate only one method, currently I now mute the line-in and I'm using the onboard audio.

I also noticed that my software TV card doesn't provide a native MPEG2 stream, my graph goes through a process of taking the individual Video and Audio streams, creating MPEG2 stream (in software I assume) then moving it into a demux process to create individual Video and Audio streams. Is there a way to by-pass the MPEG2 creation and DEMUX and map my individual Video and Audio streams from the TV card directly to the NVIDIA codecs without breaking MP?

Cheers
Steve