Why i need to seperate my audio track if i can play it ?

[bambam]

Hi
Can someone explain something to me
Why sometimes when you try to convert your avi file to mpg there is no audio you need to split the audio
out of the video (with virtualdub) and reencode with the separate audio track to make it work. I mean if i can listen
to the sound track of a video with a movie player, that necessarily mean that the right codec if install
on my computer right ? So how come TMPGEnc can't do the same thing as the movie player and play the
sound correctly and convert the mpg file with a good soundtrack.

If someone can explain this to me i would appreciate.

[Gazorgan]

Listening to the thing is one thing. Being able to re-encode it to another format is something else.

TMPGEnc is a great video encoder and a mediocre at best audio encoder. It generally can only make MP2's, and that if the source is a standard CBR WAV or MP3. Anything else and it barfs out and doesn't do the audio. Hence a lot of guides reccomend splitting the audio and video.

BeSweet is a dedicated freeware audio encoder and does a good job (slight AC3 compatibility issue on some players, and AC3 encoding support ahs been dropped). There are other encoders that also do an excellant job.

I guess the biggest thing to learn is that Audio and Video are seperate entitities, and need to be treated as such.

[freebird73717]

a lot of divx/xvid avi file have vbr encoded audio that tmpgenc can have trouble with. vbr audio compresses better but if you don't decompress the audio to pcm/wav format you can have problems like audio being out of sync with video. when working with divx/xvid files it's always best to decompress the audio and then encode in tmpgenc.

hope this helps explain it for you. if i am wrong on any of the above i'm sure someone will come by and correct me...but i remember reading a conversion guide that said you should always decompress the audio.

good luck

[bambam]

Yeah it help's me a lot to understant better all this stuff
Thank you very much
you guys are great helper !!
i appreciate it