44.1khz or 48.0khz audio for Video Editing?

Southcross · Post by **Southcross** » Sun May 07, 2006 9:41 am

I'm a tad confused on what would be the better choice. I understand you want to work with the appropriate frequency for your audio, but what if your audio is mixed.... i.e. Audio from DVD and Music from CD. Should I choose the "higher" frequency because of the DVD audio, or choose the "lower" frequency to match my baseline CD audio? Any thoughts/help would be appreciated

Purge · Post by **Purge** » Sun May 07, 2006 9:47 am

higher the better

if you wanna read more theres some info on waveforms and all that in the eadfag

gangstaj8 · Post by **gangstaj8** » Sun May 07, 2006 7:45 pm

Purge wrote:higher the better

True, but converting 44Khz CD audio into 48Khz won't actually make it sound any better. Not that it really sounds bad anyway, even compared to DVD audio, especially over most computer speakers.

I can't be 100% certain, but I doubt that having mixed audio frequencies will affect your editing. I guess there's always a possibility, but I doubt it. Unless, of coures, your editing with .MP3's, that can most certainly cause issues, just not ones relating to audio frequencies. But, once you do your final audio compression for distribution, however it is you go about doing it, you'll have a single file at one frequency anyway, likely 44khz. EADFAG recomends compressing into MP3 at 44Khz, btw.

However, if you want to make sure to avoid any possible troubles (however unlikely they might be), I would then suggest downsampling your DVD audio to 44Khz to match the CD audio. Unless you've got an extremely finely tuned ear, and an audio system that could shake loose the foundations of the Earth, you probably won't be able to tell the difference between the two frequencies anyway. You may save a little space with file size too, but I'm sure that's irrelevant. So there's my two cents. Good luck.

Keeper of Hellfire · Post by **Keeper of Hellfire** » Mon May 08, 2006 8:27 am

Normally I'd say convert it to the sample rate that's the majority of your audio. Up/down sampling always causes a little loss in quality. The only exception is if you plan to make a DVD too. Than upsample all to 48kHz to avoid double conversion of the parts which have originally 48kHz. The 10% more audio data doesn't affect the filesize of an internet distribution that much (only around 2%) because the video data is much larger.