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Olleman
8th February 2002, 22:27
Hey!

I have captured audio/video with my brand new DVB-t card for a while now (a card that let's you recieve the digital mpeg-2 stream that comes through digital-tv and then let's you stream it to the disk without quality loss) and everything have worked fine, except the last 2 days when the audio has sounded distorted and messed up, a friend of mine told me that "that" sound will often arise when the audio is played a little bit to fast or slow...or something :) The audio is in mpeg-audio format and I have not done anything with it, it's streamed right of the broadcast...

could someone just listen to it and perhaps come with a solution to make this "hearable"..

the file is only 200 kb

http://olleman.shacknet.nu/filmer/bla.mpa

Best Regards and thanks in advance: Olle

Olleman
8th February 2002, 23:54
hey!

I have come a littöe bit longer in my investigation :)

The audio seems to be 1,1082055906221821460775473399459 % longer then the video, perhaps this is making the "clpiing noises" also, the sounds goes more and more out of synch it sounds logical...

now to the new question.,..how do I speed it up so it will be as fast as the video?

Regards, Olle

DSPguru
8th February 2002, 23:58
try changing the pitch with BeSweet. the relevant switch is -ota( -r ).

Olleman
9th February 2002, 00:05
as I understand it I can only change between pal>ntsc 23.976>25 or 29.970>25 I need to do it on percentage basis...

when I tried to run it with -ota( -r 1229 1109 ) (these are my values) it says it can't convert between those fps...man, I'm really close to a solution now, I hope someone can help me all the way :)

Regards, Olle

DSPguru
9th February 2002, 00:06
try close values..
for example : -ota( -r 1108 1230 )

and beware that the first value is the DESTINATION fps.

Olleman
9th February 2002, 14:56
yeah I got it to work, but the problem is still there, the audio is still distorted and have that clipping sound in it. Allthough it runs a little bit faster after the fps conversion

regards, Olle