Blackmagic Forum

Making headway here.

This project is 48kHz (the previous one was 96kHz).

I can bounce a mix to a new layer, all good. Then rename the resulting clip. Nice. However in the Timeline one track of each mix has LEFT added to it (see image).



When I bounce the resulting clip to a file, this time it does use the name I gave it (I'll check to see if that's dependent upon sample rate or not), however when it gets to the end it says it failed, and the last seconds of the clip are missing from the bounced file. They are in the bounced mix layer though, and my in and out points are at the far edges of the clip.



Any ideas what I'm doing wrong here?

Thanks,
Thor

tlegvold wrote:I can bounce a mix to a new layer, all good. Then rename the resulting clip. Nice. However in the Timeline one track of each mix has LEFT added to it (see image).

Seeing this behaviour with certain multichannel deliverables.

When I bounce the resulting clip to a file, this time it does use the name I gave it (I'll check to see if that's dependent upon sample rate or not)

The Bounce Clip to Files function is not dependent on sample rate and correctly produces a deliverable matching the user defined Timeline Clip Name on my systems.

when it gets to the end it says it failed, and the last seconds of the clip are missing from the bounced file. They are in the bounced mix layer though, and my in and out points are at the far edges of the clip.

Ensure that no processing is applied to the Clip or Track prior to the bounce and confirm that the deliverable duration matches the source in either MediaInfo or BWFMetaEdit.

If the bounce is successful and the source and deliverables match in duration, then eliminate processing and isolate any Clip or Track-based processing in turn.

Hi Reynaud,

Reynaud Venter wrote:

tlegvold wrote:I can bounce a mix to a new layer, all good. Then rename the resulting clip. Nice. However in the Timeline one track of each mix has LEFT added to it (see image).

Seeing this behaviour with certain multichannel deliverables.

When I bounce the resulting clip to a file, this time it does use the name I gave it (I'll check to see if that's dependent upon sample rate or not)

The Bounce Clip to Files function is not dependent on sample rate and correctly produces a deliverable matching the user defined Timeline Clip Name on my systems.

That is not what I see here in multichannel, only in stereo. In my other project (where I reported the problem I was seeing) the timeline and all files are at 96kHz, in case it matters.

when it gets to the end it says it failed, and the last seconds of the clip are missing from the bounced file. They are in the bounced mix layer though, and my in and out points are at the far edges of the clip.

Ensure that no processing is applied to the Clip or Track prior to the bounce and confirm that the deliverable duration matches the source in either MediaInfo or BWFMetaEdit.

If the bounce is successful and the source and deliverables match in duration, then eliminate processing and isolate any Clip or Track-based processing in turn.

First, by definition Bounce clip to file is not supposed to include any track or bus based processing. There is no processing on the clip, it's a freshly bounced mix to a new layer. Just to test, I disabled the effects on that track (Flux Pure Limiter v3). Same error upon bounce.

I tried bouncing to file as mono files rather than interleaved, and that worked correctly, the files have the correct length and content.

So it appears that the interleaved Bounce clip to file is not working correctly for some reason. I suppose I can use another program to interleave them, or bring them into a fresh Resolve project and try bounce to disk from there. Still, it seems a bit kludgy to have to do it that way.

This is a very simple project, one video track, one stereo audio track, one 5.1 audio track. 2 output buses, one for the stereo and one 5.1. The stereo and 5.1 tracks each have a flux Pure Limiter v3 on them.

If it works on your system, why does it not work on mine?

Thor

One more thing - I just inspected the 5.1 Bounce Clip to Files (as split mono) closer, the file names are disturbing and do not seem to correlate with the clip itself.

The one marked "LEFT" (which is actually C) is listed as file _02 (where it should be _03). Now normally it could be understood that it exported in 5.1 film format (L C R Ls Rs LFE) instead of 5.1 (L R C LFE Ls Rs), but that doesn't seem to be the case here either (since I have an _00 track!).

Based on visual inspection, it looks like _00 and _01 are L & R, LEFT_02 is C, and the rest are LFE and surrounds, but the file naming is really not very helpful

This could definitely be improved...

See image.



Thor

Solved!

Resolve uses BWF format internally. BWF, being based on WAV, has a 4Gb file size limit.

My timeline, 1:30 long, results in a file that would be 4.5Gb or so, roughly speaking.

Which explains why bouncing to file worked for the stereo mix, as well as the split/mono surround, but not for interleaved (which is what the client specifically requested).

Resolve should consider adding support for BW64 to allow larger files.

Thor