- Posts: 2
- Joined: Fri Mar 30, 2018 4:08 am
- Real Name: Marco Cordero
Fri Mar 30, 2018 4:46 am
Mac Pro 5,1
(2) 3.46 GHz 6-Core Intel Xeon
64 GB 1333 MHz DDR3
GUI GPU: AMD Radeon HD 7950 3GB
Resolve GPU: (2) nVIDIA GeForce 1080 Ti
Resolve Studio 14.3
Mac OS High Sierra 10.13.3
I've been working on this machine for a few years, with the occasional graphics card upgrade, and on my current project I've been seeing glitches that I never saw before. It only happens when working with codecs like XAVC, AVC-Intra, etc. This happens on playback as well as render, and it is somewhat random. If I see a glitch and decide to play that particular clip on loop, the glitch goes away.
I have also been seeing this on a CentOS machine also running Resolve 14.3, with a Quadro P4000 as GUI GPU and (2) Quadro P6000 as Resolve GPU's. This leads me to think we are dealing with a software rather than hardware issue.
A couple notes:
- As you play back the sequence, it tends to happen on the first frame of a shot that is XAVC or AVC-Intra. More often than not it's the first frame, but other frames occasionally glitch as well.
- It doesn't happen on every single XAVC/AVC-Intra shot every single time; it's random.
- After rendering a 60-minute sequence and performing QC, there are usually around 10-20 glitch frames total.
- If you play the clip on a loop, the glitch goes away once it has played through fully, at least for the moment.
- The project is set to ACEScc. The glitches are not dependent on IDT or ODT from what I can tell.
- Exact same behavior on my Mac as on the CentOS system I described above. Both projects are ACEScc and incidentally use the same mix of codecs: Sony F55 Raw, X-OCN (both of which have zero glitches), and XAVC, AVC-Intra, which are prone to random glitches.
- Throttling the render down to slow speeds doesn't seem to help.
- This is causing us to render, then QC, then manually patch the glitch frames as we don't have another workaround.
Here are some samples of what the glitches look like:
(2) 3.46 GHz 6-Core Intel Xeon
64 GB 1333 MHz DDR3
GUI GPU: AMD Radeon HD 7950 3GB
Resolve GPU: (2) nVIDIA GeForce 1080 Ti
Resolve Studio 14.3
Mac OS High Sierra 10.13.3
I've been working on this machine for a few years, with the occasional graphics card upgrade, and on my current project I've been seeing glitches that I never saw before. It only happens when working with codecs like XAVC, AVC-Intra, etc. This happens on playback as well as render, and it is somewhat random. If I see a glitch and decide to play that particular clip on loop, the glitch goes away.
I have also been seeing this on a CentOS machine also running Resolve 14.3, with a Quadro P4000 as GUI GPU and (2) Quadro P6000 as Resolve GPU's. This leads me to think we are dealing with a software rather than hardware issue.
A couple notes:
- As you play back the sequence, it tends to happen on the first frame of a shot that is XAVC or AVC-Intra. More often than not it's the first frame, but other frames occasionally glitch as well.
- It doesn't happen on every single XAVC/AVC-Intra shot every single time; it's random.
- After rendering a 60-minute sequence and performing QC, there are usually around 10-20 glitch frames total.
- If you play the clip on a loop, the glitch goes away once it has played through fully, at least for the moment.
- The project is set to ACEScc. The glitches are not dependent on IDT or ODT from what I can tell.
- Exact same behavior on my Mac as on the CentOS system I described above. Both projects are ACEScc and incidentally use the same mix of codecs: Sony F55 Raw, X-OCN (both of which have zero glitches), and XAVC, AVC-Intra, which are prone to random glitches.
- Throttling the render down to slow speeds doesn't seem to help.
- This is causing us to render, then QC, then manually patch the glitch frames as we don't have another workaround.
Here are some samples of what the glitches look like:
- Glitch1.jpeg (205.34 KiB) Viewed 738 times
- Glitch3.jpeg (266.17 KiB) Viewed 738 times