Youtube Adding Audio Drift

[Jason Brown]

I’m guessing ur audio source is 48k…? Have u tried 44.1?

[David Mayer]

yes, i tried 44.1 and got the same result

iMac 2.8 GHz Intel Core i7, 8 GB
OS 10.6.2
Final Cut Pro 7.0

[Jason Brown]

So what other tests have you done? Tried multiple browsers? Mobile?

How are you creating the file? Compressor? FCP? Episode?

Using a template to begin with?

-Jason

[David Mayer]

When I make videos for Youtube that are 2 minutes or under, it’s quick
and convenient to export a .mov file directly from Final Cut “Using Quick Time
Conversion”. That’s what I did with this 4-minute movie and I got the audio
drift.

I just tried it a new way:
1 – Export an uncompressed file using Apple Pro Res 422
2 – Use the “Youtube” settings in Compressor

And that worked.

(Still curious why AAC with both 44.1 and 48 created
audio drift – also very curious why there was no drift
in the .mp4 file that Youtube created but the drift was
there when it streamed)

iMac 2.8 GHz Intel Core i7, 8 GB
OS 10.6.2
Final Cut Pro 7.0

[Jason Brown]

I would stay away from “exporting” from final cut to ur final deliverable. Final cut is an editor, not a transcoding software. The fact that compressor gave u reliable results doesnt surprise me. In regards to ur other issues of lag with streaming vs download…it’s YouTube…if u want more reliable and higher quality results, try something like vimeo…

Also, if ur on fcp7, u can use a “send to compressor” function. It’s like creating a file and taking into compressor…but simplifies the process. And in fcp7…u can continue to edit while transcoding.

[David Mayer]

very cool – did not know about that
send to compressor gives the same result as
exporting uncompressed and then pulling into compressor
but saves steps, right? (plus, let’s you do multiple clips
at once)
Thanks, Jason.

iMac 2.8 GHz Intel Core i7, 8 GB
OS 10.6.2
Final Cut Pro 7.0

[Jason Brown]

I would stay away from “exporting” from final cut to ur final deliverable. Final cut is an editor, not a transcoding software. The fact that compressor gave u reliable results doesnt surprise me. In regards to ur other issues of lag with streaming vs download…it’s YouTube…if u want more reliable and higher quality results, try something like vimeo…

Also, if ur on fcp7, u can use a “send to compressor” function. It’s like creating a file and taking into compressor…but simplifies the process. And in fcp7…u can continue to edit while transcoding.

[Jason Brown]

Didn’t mean to repost…sorry! 🙂

[david mayer] “send to compressor gives the same result as
exporting uncompressed and then pulling into compressor
but saves steps, right?”

Yes. I’m just a user, but I believe it is basically like creating a QT reference file…but doing it in a temp area that you never have to deal with interim files.

I use it routinely and love it. Before v7…that function would tie up FCP while it sent the file to compressor. But in v7 it now does it in the background.

Note that you do take a small performance hit while continuing to edit…because the media is being used by 2 applications. But it’s minor IMHO.

What’s great, is that you can send multiple sequences to compressor (and combine them as one video if you want)…and then add multiple output modules to each video…so you can create a WMV, h264 and vp6 (through episode plug-in)…all at the same time in the background while you continue to edit on that sequence.

It’s a very clean workflow.

-Jason