Step three: For High Quality rendering directly from the Vegastimeline to AVC/H264 and HEVC/H264 with VP14, install the free https://www.voukoder.org/ Encoder.
Codec packs can cause major problems with Windows and video software and can be difficult to completely remove. They should be avoided if possible. It's usually better to try installing the individual codec required if you can find it. As a last resort you could try installing a K-Lite Codec Pack. Again, it's highly recommended to take an image backup of your system drive before installing this, or at least to set a Windows system restore point. If the codec pack doesn't help, uninstall it.
Many thanks for your input! @RogerS my step 2 should be importing video coded with HEVC or H.265, @3POINT Voukoder's great in rendering, but my major concerns is failure in import importing video coding with HEVC or H.265, @Musicvid thank you for the advises!
Some HEVC (h.265, same thing) should work in 14. Is it 10-bit or 4:2:2? Can you share exactly what the media is with MediaInfo? https://mediaarea.net/en/MediaInfo
The oldest VP I have here is 15 but think MusicVid still has 14.
General Complete name : C:\Users\rg\Documents\Bandicam\gzdoom 2021-06-10 17-28-28-973.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (mp41) File size : 1.09 GiB Duration : 3 min 38 s Overall bit rate mode : Variable Overall bit rate : 42.8 Mb/s Encoded date : UTC 2021-06-10 22:28:30 Tagged date : UTC 2021-06-10 22:28:30 Writing application : Bandicam 5.0.1.1799 / GL / Nvidia NVENC
Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main@L4.1@Main Codec ID : hvc1 Codec ID/Info : High Efficiency Video Coding Duration : 3 min 38 s Bit rate : 42.5 Mb/s Width : 1 920 pixels Height : 1 016 pixels Display aspect ratio : 1.890 Frame rate mode : Variable Frame rate : 57.625 FPS Minimum frame rate : 1.935 FPS Maximum frame rate : 60.060 FPS Original frame rate : 60.000 FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Bits/(Pixel*Frame) : 0.378 Stream size : 1.08 GiB (99%) Language : English Encoded date : UTC 2021-06-10 22:28:30 Tagged date : UTC 2021-06-10 22:28:30 Codec configuration box : hvcC
Audio #1 ID : 2 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : mp4a-40-2 Duration : 3 min 38 s Duration_LastFrame : -8 ms Bit rate mode : Variable Bit rate : 117 kb/s Maximum bit rate : 192 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 : 3.05 MiB (0%) Language : English Encoded date : UTC 2021-06-10 22:28:30 Tagged date : UTC 2021-06-10 22:28:30
Audio #2 ID : 3 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : mp4a-40-2 Duration : 3 min 38 s Duration_LastFrame : -2 ms Bit rate mode : Variable Bit rate : 174 kb/s Maximum bit rate : 286 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 : 4.53 MiB (0%) Language : English Encoded date : UTC 2021-06-10 22:28:30 Tagged date : UTC 2021-06-10 22:28:30
This range of frame rates looks like a nightmare for editing software to decode. Does it have any options for non-variable framerate or not HEVC? If not I think you want to get it into a constant frame rate before bringing into Vegas. Software like Shutter Encoder or Handbrake should be able to do it but I don't have much experience myself.