Suddenly some MP4s are playing back slo-mo audio

Jessariah67 wrote on 4/17/2024, 2:37 PM

Ever since 300 update. Everything I get from Riverside plays back slo-mo audio. They're wavs play fine. The mp4s playback fine in VLC Player. The RS MP4s encoded in Shutter Encoder still play back with slo-mo audio. Older MP4s from Riverside also NOW slo-mo. MP4s rendered in Vegas are playing fine on the timeline. (Mp4 to Mp4)

Comments

RogerS wrote on 4/17/2024, 6:16 PM

This is a known issue with all mono audio in video files. Either separate the audio and convert to wav or check "enable legacy AVC decoding" in preferences/video if they are in AVC files.

Jessariah67 wrote on 4/17/2024, 7:02 PM

This is suddenly happening with files that played fine before. I will try the other suggestions, but this has to have something to do with the latest update.

RogerS wrote on 4/17/2024, 8:32 PM

Yes, this is a known issue with the new decoder in build 300 and mono audio. There are many threads here about it and replies from VEGAS engineers who are fixing it.

Enable legacy AVC to perform like build 208 with the so4compound decoder.

Last changed by RogerS on 4/17/2024, 8:33 PM, changed a total of 1 times.

Custom PC (2022) Intel i5-13600K with UHD 770 iGPU with latest driver, MSI z690 Tomahawk motherboard, 64GB Corsair DDR5 5200 ram, NVIDIA 2080 Super (8GB) with latest studio driver, 2TB Hynix P41 SSD and 2TB Samsung 980 Pro cache drive, Windows 11 Pro 64 bit https://pcpartpicker.com/b/rZ9NnQ

ASUS Zenbook Pro 14 Intel i9-13900H with Intel graphics iGPU with latest ASUS driver, NVIDIA 4060 (8GB) with latest studio driver, 48GB system ram, Windows 11 Home, 1TB Samsung SSD.

VEGAS Pro 21.208
VEGAS Pro 22.250

Try the
VEGAS 4K "sample project" benchmark (works with VP 16+): https://forms.gle/ypyrrbUghEiaf2aC7
VEGAS Pro 20 "Ad" benchmark (works with VP 20+): https://forms.gle/eErJTR87K2bbJc4Q7