Why external Encoder to mp2.

[ranma_st]

Hi:

Why do you need an external audio encoder like TooLAME: Audio Encoder to mp2. if you can do it in TMPGEnc.

Why does TMPGEnc have an External Audio Tools for mp2 in the enviromental options, if you can do it directly.

It is a bit confusing. Can somebody explain it to me.

Thanks

8)
Rey

[BJ_M]

because tmpgenc's audio compression functions and bit rate change are not very good and the authors of tmpgenc know that fact - and allow external audio plugins ... why re-invent the wheel since the apps you can "plugin" work extremly well ..

[adam]

TMPGenc's audio encoding quality is average at best. It will work it just won't sound as good as what toolame can do. Obviously TMPGenc's author realizes that audio decoding isn't his programs strong point which is why he wisely added support for external audio encoders. If you are happy with TMPGenc's quality then you can just use it directly.

Now TMPGenc's frequency rate converter is really bad. If you use it to convert 48kHz to 44100kHz it often adds extremely noticable artifacts and gives the audio a metallic sound. You should definitely use ssrc.exe as an external frequency rate converter in TMPGenc, but again this is optional.

[ranma_st]

Hi:

You should definitely use ssrc.exe as an external frequency rate converter in TMPGenc, but again this is optional.

What's ssrc.exe? Where can I find it?

Thanks for your time

THX

8)
Rey

[BJ_M]

http://shibatch.sourceforge.net/download/ssrc-1.29.zip

or http://shibatch.sourceforge.net/

[energy80s]

Now TMPGenc's frequency rate converter is really bad. If you use it to convert 48kHz to 44100kHz it often adds extremely noticable artifacts and gives the audio a metallic sound. You should definitely use ssrc.exe as an external frequency rate converter in TMPGenc, but again this is optional.

I use TMPGenc all the time to convert from 44.1 captures to 48k audio for my CVD's and I have NEVER heard any audio problems. Now maybe the built-in encoder isn't as clean as LAME but it doesn't give poor sound quality with a lot of artifacts. Having worked with audio for nearly 30 years I think I can tell when something sounds shite (like DAB radio in the UK!)

[sterno]

I use TMPGenc all the time to convert from 44.1 captures to 48k audio for my CVD's and I have NEVER heard any audio problems.

I have noticed some problems (metallic sound, high-pitched background whine), but only on a few encodes. I don't know why, the pieces of audio don't seem to have anything obvious in common, but I'm no audio expert. Since I started using ssrc I haven't seen that, but I haven't tried reencoding any of the clips that had problems so I can't say for sure.

[adam]

I use TMPGenc all the time to convert from 44.1 captures to 48k audio for my CVD's and I have NEVER heard any audio problems. Now maybe the built-in encoder isn't as clean as LAME but it doesn't give poor sound quality with a lot of artifacts. Having worked with audio for nearly 30 years I think I can tell when something sounds shite (like DAB radio in the UK!)

Maybe you have just been lucky, I do not know what it is that causes this severe distortion in TMPGenc's frequency rate converter but I can assure you that it does happen and when it does you will surely know it. It sounds like you are watching a movie inside of a lead pipe. This is a well known problem. I have experienced it myself and if you search the forums you will see that probably close to 100 people have reported this very problem. Use what works for you but I strongly recommend that anyone who uses TMPGenc use ssrc as an external frequency rate converter. At the very least it will probably shorten your encoding time.

As for the audio encoding, I said myself that TMPGenc's audio encoder isnt horrible, but that toolame is much better. If you can't hear a difference then use whichever you want, but I can definitely hear a noticable difference in quality, so I choose toolame. You are mixing and matching my statements. The distortion I was talking about is from the frequency changer not the audio encoder. Whether you use toolame or not has no effect on this distortion.

[energy80s]

Adam, I was answering both of your statements.

1. That the built-in MPEG1 Layer 2 audio codec in TMPGenc is OK for most things, unless you are looking for perfection in audio, in which case use LAME.

2. That TMPGenc has never given me ANY distortion/artifacting/metallic sound over the course of the last 6 months when converting from 44.1 to 48k sound.

3. What's your opinion of the built-in codec in DVD2AVI for downsampling from 48 to 44.1?? I would use this for any VCD's I make from DVD sources (admittedly not many as I normally use 48k for audio on CVD's which is my main format).

[adam]

As far as my ears can tell dvd2avi's frequency converter is fine but it is very slow. In my opinion ssrc.exe is the best compromise between speed and quality. Like I said, by using ssrc at the very least you will probably decrease your encoding time.