I have been getting a strange error in MP4s rendered with Voukoder. (Before I go any further, I LOVE Voukoder, beautiful images, small files.)
The symptom is a brief pixelated image in the rendered file at the point the timeline transitions from one event to the next one. But it only happens about one time in 10 or 15. In one file, the pixelated frames are from a different part of the timeline. . In one file, this happened at the third transition. In another, at the 12th transition. This error does not occur with Magix MP4 template at the same transition.
The events are Canon MXF files from a Canon XF300, 1920 x 1080, 60p, at 50Mbps. There can be 20 events on a timeline. The events are all butted up against each other, there are no gaps.
There is the video track, and above it 3 other tracks, one with a simple legacy text that says "7 PM" with clear background, one with a single empty event with a timecode running, and one with song titles and performers' names in a Vegas Credit Roll.
VEGAS White balance FX is applied to all events.
Vegas version 18, build 527. Computer AMD Ryzen 3900X 12-core processor at 4GHz not overclocked. 8 GB memory. Source files are on an SSD. Vegas program is on a different SSD. Render output goes on an internal HDD. Running this template with these files, CPU load is over 90% and sometimes hits 100%. NVIDIA GPU is loafing. Windows 10 Pro, OS build 19041.985.
Voukoder version 7, template: "Video: project default, Audio: project default"
"Audio: 0 Hz, 0 Channel
Video: Project Frame Rate, Project Frame Size
Pixel Aspect Ratio: 1.000"
(Note: there is audio in the source and the rendered output, and it is working properly.)
General
Complete name : L:\Coppelia2021\CopelliaSat7pm\AA1516\AA151602.MXF
Format : MXF
Commercial name : XDCAM HD422
Format version : 1.2
Format profile : OP-1a
Format settings : Closed / Complete
File size : 1.91 GiB
Duration : 5 min 13 s
Overall bit rate : 52.2 Mb/s
Encoded date : 2021-06-05 20:09:55.000
Writing application : CANON XF300 1.00
Video
ID : 2
Format : MPEG Video
Commercial name : XDCAM HD422
Format version : Version 2
Format profile : 4:2:2@High
Format settings : CustomMatrix / BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=15
Format settings, wrapping mode : Frame
Codec ID : 0D01030102046001-0401020201040300
Duration : 5 min 13 s
Bit rate mode : Constant
Bit rate : 50.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 (30000/1001) FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:2
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.805
Stream size : 1.83 GiB (96%)
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio #1
ID : 3
Format : PCM
Format settings : Little
Format settings, wrapping mode : Frame (AES)
Codec ID : 0D01030102060300
Duration : 5 min 13 s
Bit rate mode : Constant
Bit rate : 768 kb/s
Channel(s) : 1 channel
Sampling rate : 48.0 kHz
Frame rate : 29.970 FPS (1601.6 SPF)
Bit depth : 16 bits
Stream size : 28.7 MiB (1%)
Locked : Yes
Audio #2
ID : 4
Format : PCM
Format settings : Little
Format settings, wrapping mode : Frame (AES)
Codec ID : 0D01030102060300
Duration : 5 min 13 s
Bit rate mode : Constant
Bit rate : 768 kb/s
Channel(s) : 1 channel
Sampling rate : 48.0 kHz
Frame rate : 29.970 FPS (1601.6 SPF)
Bit depth : 16 bits
Stream size : 28.7 MiB (1%)
Locked : Yes
Other #1
ID : 1-Material
Type : Time code
Format : MXF TC
Frame rate : 29.970 (30000/1001) FPS
Time code of first frame : 09:31:09;18
Time code settings : Material Package
Time code, striped : Yes
Other #2
ID : 1-Source
Type : Time code
Format : MXF TC
Frame rate : 29.970 (30000/1001) FPS
Time code of first frame : 09:31:09;18
Time code settings : Source Package
Time code, striped : Yes
Other #3
Type : Time code
Format : SMPTE TC
Muxing mode : SDTI
Frame rate : 29.970 (30000/1001) FPS
Time code of first frame : 09:31:09;18
