Problems that appeared after updating to Build 194 HEVC

Andreas-T wrote on 11/6/2024, 3:46 AM

2 new problems appeared for me after the recent update, that was not present on the previous build.

Something seems to have changed in the video engine although it is not referred in release notes.

1. The last 2 frames when footage is 25p and 4 frames when the footage is 50p in all events are black.
2.The preview lags when playing a video, especially when the playhead moves from one vent to the next.

All the above appear for 4k HEVC content captured by GH6 , using the mxcompoundplug

The preview of that video files in Vegas 22 until now was just amazing.

Does anyone else observed this behavior? and is there any solution?

The so4 does not have black frames but then again the editing process is awful for that format.

media info:

Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (mp42/hvc1)
File size                                : 107 MiB
Duration                                 : 9 s 120 ms
Overall bit rate                         : 98.0 Mb/s
Frame rate                               : 50.000 FPS
Encoded date                             : 2024-09-28 13:19:50 UTC
Tagged date                              : 2024-09-28 13:19:50 UTC

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 9 s 120 ms
Bit rate                                 : 95.7 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 50.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.231
Stream size                              : 104 MiB (98%)
Encoded date                             : 2024-09-28 13:19:50 UTC
Tagged date                              : 2024-09-28 13:19:50 UTC
Color range                              : Full
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 9 s 120 ms
Source duration                          : 9 s 173 ms
Bit rate mode                            : Constant
Bit rate                                 : 128 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 139 KiB (0%)
Source stream size                       : 140 KiB (0%)
Encoded date                             : 2024-09-28 13:19:50 UTC
Tagged date                              : 2024-09-28 13:19:50 UTC

Comments

RogerS wrote on 11/6/2024, 7:14 AM

Any chance you could upload a file to a sharing site so we can compare exactly the same file type? Would be great for other AMD GPU users to confirm the behavior you are seeing.

Andreas-T wrote on 11/6/2024, 7:42 AM

Any chance you could upload a file to a sharing site so we can compare exactly the same file type? Would be great for other AMD GPU users to confirm the behavior you are seeing.

yes, sure, here it is. https://we.tl/t-aUAk49mPV8

johnny-s wrote on 11/6/2024, 8:45 AM

@Andreas-T I can confirm the issue. I used my PC and changed the decoder in I/O to my AMD iGPU. 4 black frames at end. Using mxcompoundplug.

No issue if using Nvidia as decoder.

In device driver the AMD driver shows as version .. 31.0.24002.92

I downloaded AMD Adrenlin software, ran it and it updated driver to .. 32.0.12019.1028

Still 4 black frames.

john_dennis wrote on 11/6/2024, 10:09 AM

@Andreas-T

With the UHD770 video adapter in the i9-13900K, the last Absolute Frame of your sample file is 311 and it is not black.

johnny-s wrote on 11/6/2024, 10:37 AM

It's actually 3 black frames.

Anyway I also tested on a Panasonic GH7 with hevc 10 bit 420 50 fps. both .mov and .mp4.

The mp4 file on the GH7 also has 3 black frames at the end but the mov file doesn't.

Screenshot of medianfo for mp4 on left and mov on right.

Meant to say that the mov file also uses .. mxcompoundplug.dll.

So I guess your workaround is to use .mov in GH6 if they have no black frames at end.

Reyfox wrote on 11/6/2024, 10:43 AM

Yes, with my system specs in the Signature, black frames at the end of the clip.

As for playback... after a rough start, full frames at Best>Full.

Andreas-T wrote on 11/6/2024, 1:09 PM

Yes, with my system specs in the Signature, black frames at the end of the clip.

As for playback... after a rough start, full frames at Best>Full.

with rough start you mean that at the first run drops some frames but as it keep playing the same event manage to maintain 50 fps all the time?

Cause something like this is my experience

But the problem is that this happens again with every new event, and as the events are hundreds in a project, it keeps lagging all the time.

Andreas-T wrote on 11/6/2024, 1:14 PM

It's actually 3 black frames.

Anyway I also tested on a Panasonic GH7 with hevc 10 bit 420 50 fps. both .mov and .mp4.

The mp4 file on the GH7 also has 3 black frames at the end but the mov file doesn't.

Screenshot of medianfo for mp4 on left and mov on right.

Meant to say that the mov file also uses .. mxcompoundplug.dll.

So I guess your workaround is to use .mov in GH6 if they have no black frames at end.

i,ll try to use the mov but for now i have a lot of projects captured at mp4.

for now i use a vegasaur action to automatically trim the last frames for every event before starting editing, but as we established that this happens not only on my pc and i can confirm that in the previous build was not happening, i hope it gets in the bug list for fixing by the developers , along with the lagging.

Reyfox wrote on 11/6/2024, 1:50 PM

Well, you can lower your Preview to something that can play things back smoothly. Playing back with color grading a clip at 18fps until it gets up to full speed with a preview of Best>Full, is quite ok for me.

I have VP18-22 on my computer and will test other versions tomorrow.