Answers to questions about audio rendering

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PalmerWoodrow

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Answers to questions about audio rendering

PostMon Apr 30, 2018 12:56 am

The Render Individual Clips modes has two use cases as the product is designed for:

1. Round-trip back to a 3rd party NLE as an XML or AAF round-trip
2. Dailies rendering with sync'ed audio

Since you are working on #2, the audio sync needs to be done in the Media Pool. If you are attempting to sync in the timeline as a creative edit process, that's not going to work. There are many reasons for this, but one of them is the individual source clip mode render allows for rendering with handles. How do you want us to generate handles for the audio section? Also, the video is rendered 1:1 at the source frame-rate, what happens when you do a speed-change in the timeline to the video, the audio is not going to be rendered correctly if we use 1:1 from the timeline.


Thanks for that answer.

I searched for "sync" in the manual, and it was found on 12 pages. On none of them is there an explanation of how audio and video clips may be synced in the Media Pool. There is a reference to having done so, but no instruction. Nor is there any menu item containing "sync," according to the Help menu. Nor is there a relevant one containing "audio." If we can't find it using these terms, I submit that the information is essentially unavailable to the user.

Nor does the UI provide a clue, since there is no timeline in which to position audio and video clips in relation to each other. So how do we do this, and how are we supposed to know how to do it? I understand the v.15 manual might not be done, but this seems like an existing function.

How do you want us to generate handles for the audio section?...what happens when you do a speed-change in the timeline to the video, the audio is not going to be rendered correctly if we use 1:1 from the timeline

Good questions, and I was about to provide suggestions because I think they're solvable. However, thinking it through, what you've mentioned (syncing in the Media Pool) is a better workflow than what I would have suggested.

So what we're left with is the problem that's probably easiest to fix: The current UI shows straight-up wrong information. It shows and plays back a combination of audio & video that often is NOT what will be rendered. I don't see why this is deemed acceptable, when all you have to do is show and play exactly what will be rendered based on the user's choices. And that means the UI must reflect the settings made in the job you're creating or the one that's selected. Shouldn't we expect that?

Stop showing bogus content in the Deliver timeline. If you'd simply do that and provide a clear UI for syncing audio in the Media Pool (which I agree is a good place to do it) and document it, then I think almost everyone's needs would be met and the potential for erroneous, time-consuming, and potentially embarrassing renders would be hugely reduced.

And please, please clean up the Render Settings UI on the deliver page. That includes fixing the aforementioned bug where Resolve turns off "unique filenames" and overwrites the same file forever. Come on, guys.

Thanks for your consideration. I know it's hard to please everyone and that everyone thinks his complaint is the most important, but I don't see (and haven't heard) a downside to what I've suggested in regard to a fundamental function of this application: delivering results.
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John Paines

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Re: Answers to questions about audio rendering

PostMon Apr 30, 2018 1:32 am

PalmerWoodrow wrote:
I searched for "sync" in the manual, and it was found on 12 pages. On none of them is there an explanation of how audio and video clips may be synced in the Media Pool. There is a reference to having done so, but no instruction. Nor is there any menu item containing "sync," according to the Help menu. Nor is there a relevant one containing "audio." If we can't find it using these terms, I submit that the information is essentially unavailable to the user.

Nor does the UI provide a clue, since there is no timeline in which to position audio and video clips in relation to each other. So how do we do this, and how are we supposed to know how to do it? I understand the v.15 manual might not be done, but this seems like an existing function.


If you want the answer, refer to pages 220-222 of the 14.3 manual, which detail automated and manual synching in the media page.

The header on page 221 could be clearer -- it really means to say, manually syncing dailies in the media page (*not* the timeline) -- but the illustration at least is correct, as are the instructions.
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PalmerWoodrow

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Re: Answers to questions about audio rendering

PostTue May 01, 2018 9:32 pm

Thanks, John. In my v14 manual it's on page 216.

The procedure is pretty decent, and it offers the necessary flexibility in defining a clip's audio tracks and their characteristics. But it's not something you can divine from the UI, making the proper indexing of the doc essential.

There is one problem I see: When the clip is dragged into a timeline, the linked-audio track shows the wrong filename. It shows the name of the video file, not the audio file.
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Peter Chamberlain

Blackmagic Design

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Re: Answers to questions about audio rendering

PostThu May 03, 2018 3:35 am

We are addressing the file name display request
DaVinci Resolve Product Manager
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PalmerWoodrow

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Re: Answers to questions about audio rendering

PostThu May 03, 2018 5:15 am

Yep. saw that in your other post. Good news. Thanks.

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