Issue: Error decoding FLAC in 24-bit 7.1 channels

Using DaVinci 19.0.3.5, an issue of using flac:

1. Download the flac file from https://github.com/eviluess/eviluess.gi ... /2471.flac
2. Import this file into DaVinci
3. Check 1'45"

This file can be transcoded to 16-bit 7.1 flac and DaVinci can handle it correctly.
This file can be transcoded to 24-bit 7.1 PCM Wave file and DaVinci can handle it correctly.
Other DAWs such as Reaper can handle the 2471 flac correctly.

A video recording was uploaded to YouTube for you to check it out:

Seems to be a Windows only issue, or do you mean the gap in the waveform?

Bildschirmfoto 2024-10-27 um 18.01.33.png (112.95 KiB) Viewed 2027 times

Seems to be a Windows only issue, or do you mean the gap in the waveform?

Bildschirmfoto 2024-10-27 um 18.01.33.png

Thank you for your quick response.

I do not have access to macOS, but I can confirm that I have the 7.1 audio track configured correctly in the FLAC file, as well as in other audio files in the recorded YouTube video.

As you may have noticed, the 2471 audio in track 7.1 displays a partially broken waveform, and there are random periods of silence within that range. This issue does not occur when I use 16-bit 7.1 FLAC files or 24-bit 7.1 WAV files; it only happens with 24-bit 7.1 FLAC files.

OK, I see a gap of 15 seconds from 1:45 in the waveform, but my meters keep moving and I hear the sound.
Something is wrong.

OK, I see a gap of 15 seconds from 1:45 in the waveform, but my meters keep moving and I hear the sound.
Something is wrong.

Thank you for your verification of this topic.

You mean this issue also occurs on your macOS, right?

You mean this issue also occurs on your macOS, right?

Yes.
Does it happen at the same point in time with other clips? Or is it random?

You mean this issue also occurs on your macOS, right?

Yes.
Does it happen at the same point in time with other clips? Or is it random?

Each individual file has its own fixed range.
For instance, the A1 file has an A1 range, while the A2 file has an A2 range.
The boundaries of these ranges are not the same and are not fixed as a certain percentage of the total duration.

For example, I found that one file starts at 0'09" and has a total duration of 27 seconds.

I’m afraid it’s up to BM then to look into this.

I’m afraid it’s up to BM then to look into this.

Agree, this is not a new issue.
It started from v18.5 or even earlier.

How to let BM know this issue?

If you have Studio, you can contact support.

If you have Studio, you can contact support.

I thought BM will take a look at this forum.
I'll redirect this thread to the "issue" section.

They do look at this forum, but you may need patience.

They do look at this forum, but you may need patience.

I just wonder why the QA team didn't notice this issue.
And I don't even know why using libFlac can cause this issue, it must be very stable for years.
(And so does the QA team of BM skip this test?)

They do look at this forum, but you may need patience.

I made this thread' title beginning with Issue, and hope BM will see it.

Davinci Resolve freezes with a 5.1 FLAC 24bits. (and not shows audio waveforms on timeline...)
Please can you fix these issues ?

Davinci Resolve freezes with a 5.1 FLAC 24bits. (and not shows audio waveforms on timeline...)
Please can you fix these issues ?

Wow! so horrible!

Davinci Resolve freezes with a 5.1 FLAC 24bits. :o (and not shows audio waveforms on timeline...)

Please indicate Resolve version, operating system, and computer spec. Include this information in your signature to assist troubleshooting.

Not reproducing issues with the host freezing with FLAC source media, nor issues with reduce files as waveforms are available for FLAC source media on the macOS and Windows systems here.

Can you include a link to sample media which causes Resolve to hang?

Please include a link to logs if the host hangs. Instructions to generate logs are provided in the FAQ: viewtopic.php?f=21&t=90190#16

Davinci Resolve freezes with a 5.1 FLAC 24bits. (and not shows audio waveforms on timeline...)

Please indicate Resolve version, operating system, and computer spec. Include this information in your signature to assist troubleshooting.

Not reproducing issues with the host freezing with FLAC source media, nor issues with reduce files as waveforms are available for FLAC source media on the macOS and Windows systems here.

Can you include a link to sample media which causes Resolve to hang?

Please include a link to logs if the host hangs. Instructions to generate logs are provided in the FAQ: viewtopic.php?f=21&t=90190#16

Hello, Reynaud Venter,

I’m glad to see someone in charge has noticed this thread. The 7.1 24-bit FLAC issue is significant, and I have already posted a sample media file in this thread for reference. I hope this issue can be resolved soon.

Thank you in advance for your attention to this matter.

Seems to be a Windows only issue, or do you mean the gap in the waveform?

Bildschirmfoto 2024-10-27 um 18.01.33.png

flac file from first post.

There aren't gaps on flac file (Audacity)


Same file on DR

Sorry to disappoint you, but Reynaud is a user like us.
The guys from BM will have their names in blue if they answer.

Sorry to disappoint you, but Reynaud is a user like us.
The guys from BM will have their names in blue if they answer.

Wow, so sad.
And I believe there's another issue about flac 7.1 -- channel layout mapping.
It's not the same as the official flac document.

I need to swap the rear and side channels each time I import a 7.1 flac.
( I have been actually doing this by sending to a bus swapping channels, if I plan to import many 7.1 flac
files.)
Since this can be work-arrounded, it's not that urgent than the 24-71 one.

Any news about the issue
issue= "7.1Ch 24bit flac import"
Thanks guys

Win11 here - DR 19.1.1 b8

Any news about the issue
issue= "7.1Ch 24bit flac import"
Thanks guys

Win11 here - DR 19.1.1 b8

Regarding the test file for the 7.1 FLAC import issue, I checked it in the latest version of DaVinci Resolve, and it appears to be fixed now.
Thanks for your work on that!
However, I'm hoping this separate issue, detailed in the link below, can also be addressed in a future version:
viewtopic.php?t=217216
Thanks in advance!