It feels like it has something to do with the decoding of the XAVC format.
Why don't you check it by comparing with the decode function switched on and off?
It's kind of obvious, that newer card performs better, BUT how do you know, if that's is by better support by vegas, or it's only from card itself? Maybe if vegas don't "broke" something, performance would be even more better?
@fr0sty Yes I really think it has something to do with decoding XAVC files. Using MPEG2 or H.264 material, the render and playback performance is way better. But since we are using FS7 and A7S2 camera's we want to do this in decent quality. And I am not able to playback XAVC-i UHD 10-bit 50fps with a better preview rate than say 35fps. A renderd 50fps H.264 file will perform much better.
Tomorow I wil start a new workstation build. This will feature a Ryzen 7 and RTX-2080 super. I hope that this will boost in preview performance, but sadly I doubt it.
Your CPU boost will definitely help. I don't think GPU decoding works for XAVC, only h264 and HEVC, so I wouldn't expect the GPU upgrade to be a huge boost there.
Vegas has always had a harder time decoding 10 bit video, I have to proxy mine to edit it smoothly no matter which version of Vegas I'm using.
Is there any chances, that this "thing" will be checked or even fixed by Vegas stuff? I feel that new version is ahead, but Im still stuck with this.
@fr0sty Yes I really think it has something to do with decoding XAVC files. Using MPEG2 or H.264 material, the render and playback performance is way better. But since we are using FS7 and A7S2 camera's we want to do this in decent quality. And I am not able to playback XAVC-i UHD 10-bit 50fps with a better preview rate than say 35fps. A renderd 50fps H.264 file will perform much better.
Tomorow I wil start a new workstation build. This will feature a Ryzen 7 and RTX-2080 super. I hope that this will boost in preview performance, but sadly I doubt it.
Update! Even with the new Ryzen 7 3800X, 32GB of DDR4 3200MHz and the RTX-2080 Super it has the same results. XAVC files will not play in higher frame rate than 25 to 35 fps. Vegas is only using some part of the resources. 40% CPU and 15% GPU. This is driving me crazy!
This is just so sad. I really hope, that this will be fixed soon!
Build 421 still has this bug.
Sorry guys, but this is annoying as (i don't want to say this). New patch 452 STILL CAN'T PLAY AVC 25p smooth at 25fps (don't even think about some video plugin) while VEGAS 16 CAN.
And I afraid this his last update for 17, and you now go to 18......... SAD DAY.
Is Nvidia selected in file i/o for decoder?
For people who has the issue: do you mind to upload a short example of the footage you experience the issue on dropbox or similar?
Is Nvidia selected in file i/o for decoder?
GPU read decode does not work with this format so need efficient render engine. So many people talk about Vegas not using their CPU , dropping a huge amount of frames with cpu in 40 - 50%. It doesn't make any sense. Why won't vegas use our cpu's.
People with 4 core machines are gaslighted into believing they need 8 cores, and people with 8 cores are gaslighted into believing it's still their fault. You 6+ core people can you try disconnecting the gpu completely by turning off gpu processing, and gpu decoding. Confirm you are still dropping frames and your cpu use remains low with basic playback?
The premise being that there is a synchronicity between gpu and cpu, so if you disconnect them when gpu is not required it should allow the maximum efficiency of cpu and playback rate. I have 4 core CPU I will always be gaslighted into believing it's my fault and that I deserve this. If I knew 6 or 8 cores really solved the problem I'd upgrade but I'd like to see a case of one of you 8core people actually being able to fix your vegas playback problems.
SPECIFICATIONS
For optimal performance, we recommend the following minimum system requirements.
System Requirements
Operating system: Microsoft® Windows 10 (64-bit)
Processor: 6th Generation Intel Core i5 (or AMD equivalent) or better. 2.5 Ghz and 4 Core minimum. For 4k, 7th Generation Intel Core i7 (or AMD equivalent) or better. 3.0 Ghz and 8 Core minimum
RAM: 8 GB RAM minimum (16 GB recommended; 32 GB recommended for 4K)
Hard drive space: 1.5 GB hard-disk space for program installation; Solid-state disk (SSD) or high-speed multi-disk RAID for 4K media
Other: Microsoft .NET Framework 4.0 SP1 (included on application disc)
Internet connection: Required for registering and validating the program, as well as for some program functions. Program requires one-time registration.
Program languages
English, Deutsch, Español, Francais
Supported GPU
NVIDIA
For hardware rendering (NVEnc):
NVIDIA® GeForce 9XX series or higher with 4 GBAMD/ATI
AMD/ATI® Radeon with 4 GB and VCE 3.0 or higher (Radeon Pro series with 8 GB for HDR and 32 bit projects)
Intel
Intel® GPU HD Graphics 530 series or higher
Post about MXF.
Apparently this problem with playback will be solved for us.
I have a 4 core Xeon and a GTX970.
I recently upgraded to a 12-core Ryzen and tested to see if I could play 4k MXF and 4k DJI smoothly with the GPU turned off. The 4k MXF was just as desperate and the 4k DJI improved significantly.
However, I also had such results with the 4-core Xeon and GTX 970.
So I returned Ryzen and stayed with Xeon and GTX970.
Vegas plays X-AVC long MXF according to the mood.
For a while smoothly and at once you have 2 frames per second and you don't know why.
In my opinion, the future of Vegas is in the GPU.
You just have to be patient. The team does what it can.
Here's MXF file:
https://www.uschovna.cz/zasilka/YUVUGCUNNKZ9YGR8-T4E/
All my video is Sony XAVC and I have a 1080Ti card. V16 does not use video decode (So4 compound reader) so preview Best full will drop frames. V17 makes use of video decode at 20% typically and has much improved performance and can show dissolve transitions.