5.1 wav to ac3 - Sound decreased in first few seconds

[King_Diamond]

I am encoding a 5.1 wav file to ac3. My problem is that when the ac3 file is played, the sound starts normally but after about 2 secs it starts decreasing in loudness especially the voice. Then it seems to continue at stable loudness. I encoded the file using -27db as dialog normalisation. Anyone has any idea what the problem could be? Or what settings should i use or change? I used the default settings.

I am gonna try to encode it with -31db as dialog normalisation but will have the result in about 7hrs. So if someone thinks that this setting is not the case, please advice so I stop an unuseful long process.

[ursamtl]

Which AC3 encoder are you using?

[King_Diamond]

Surcode.

[King_Diamond]

Any ideas?

[sillKotscha]

turn off "normalize" concerning your ac3 decoder

btw, the way you are posting is not very nice...

[King_Diamond]

There is no normalisation except the dialog and I don't think it can be turned off or I don't know how.

Btw what's wrong with my posts?

[sillKotscha]

There is no normalisation except the dialog and I don't think it can be turned off

just think about the fact, that in general there isn't only one decoder for a specific file type ;)

and until now you didn't tell us which decoder you are using...

ac3filter or ffdshow are well suited for that kind of tasks.

Btw what's wrong with my posts?

http://tinypic.com/73i0le.png

please keep in mind there is an edit button and if I think about me for example - today I saw your post for the first time and answered you (when I or any other member got the time)... as you may remember after a postcount of 111 posts, this is a forum not chat :)

[King_Diamond]

just think about the fact, that in general there isn't only one decoder for a specific file type

and until now you didn't tell us which decoder you are using...

ac3filter or ffdshow are well suited for that kind of tasks.

I did say the decoder i'm using, it's surcode. ac3filter is just a filter and does not decode ac3 to be burnt on dvd. I don't know about ffdshow. Will take a look at it and try it.


please keep in mind there is an edit button and if I think about me for example - today I saw your post for the first time and answered you (when I or any other member got the time)... as you may remember after a postcount of 111 posts, this is a forum not chat

You are right about finding time to answer posts. The thing is that i have been working on this project for over a year and a half and this should be the last hitch, hopefully! I'm willing to see it finally ready. I was not chatting but seeking help like anyone in the forum. I apologise if my posts looked unadequate.

[sillKotscha]

I did say the decoder i'm using, it's surcode. ac3filter is just a filter and does not decode ac3 to be burnt on dvd. I don't know about ffdshow. Will take a look at it and try it.

ok, misunderstanding on both sides... I thought you're concerned about decoding your ac3 stream... but you are already dissatisfied with your encoded file, 'cause surcode is an encoder, not a decoder - so, ac3filter and ffdshow won't help you much here. try a different ac3 encoder instead, for example try besweet and BeLight as an easy to use interface.



You are right about finding time to answer posts. The thing is that i have been working on this project for over a year and a half and this should be the last hitch, hopefully! I'm willing to see it finally ready. I was not chatting but seeking help like anyone in the forum. I apologise if my posts looked unadequate.

within a timeframe of a year I would have researched a bit more about encoding (wav -> ac3) audio ;)

[King_Diamond]

No problem. Re decoding, sorry, typing mistake. Infact in other posts i said encoding. I tried besweet before surcode and had more problems than surcode (i thought surcode was one of the best encoders!). However i did not try belight, which i will.

In more than a year it wasn't just audio encoding. It was the whole dvd, from capturing, editing, title creation, encoding video and audio, authoring, etc. and i had problems in nearly every field! I did research on all the problems i encountered all the way but somethings were unexplainable, like this one and had to seek help to continue. Anyways, thanks for your help.