I have always been able to download, view, and listen, (without any audio issues), to a particular .mp4 file(s), using my at home "Plex" media server OR simply using VLC. I've never tried to create any new project or projects using these files, (all from the same source of persons), in Vegas Pro 17, until today. When I try to loaded ANY of these file(s) into Vegas Pro 17, I hear slight "shutter" and popping in the AUDIO. I will try and post an example, if this form will allow it.
Why would the file play fine on a Plex Media Home Server or VLC, then, exhibit a little shuttering and popping, in the AUDIO, when I am working with the file in Vegas Pro 17? I tried looking at the codec info, (from VLC), while it was playing. On occasion, I notice a few drooped frames for the VIDEO, but none dropped for the AUDIO. The sample rate of the AUDIO stream is 48,000 Hz just as Vegas Pro 17. The AAC Extension is SBR, (per VLC). I can't find this setting in Vegas Pro 17 to compare. I'm not sure if I even need to. If I dig deeper into the properties for this .mp4 file in VLC, I notice the "Audio Sample Rate" is at 24.000 kHz. Is this value the same terminology as Vegas Pro's "Bit depth"? If so, by default, Vegas used a "Bit depth" of 16. My changing it to 24 helped nothing.
It might be worth noting that the file I downloaded, (the source file), was encoded with "Lavf57.71.100" I tried to render out a short sample of the file as meg2. The AUDIO trouble still remains in the output file. The Video and Audio are otherwise in sync.
However, using Handbreak's default settings, other than selecting a 2 pass encode on the video itself, renders a file that plays PERFECT and no distortions in the audio.
In Vegas Pro 17, under preferences, then "audio device", I tried increasing the playback and track buffering by double the default values. It also helped nothing. It seems it's a codec issue of sort concerning the audio stream. Any thoughts or guidance would be appreciated. I'd rather not have to re-encode these files JUST to get the audio cleared up. It's already an mp4. I'd be compressing an already compressed file AGAIN for the audio issue, then, AGAIN for the final project file. Well, at least once for the AUDIO issue. I suppose I can output to a DVD spec for the final file. Thanks again. I look forward to some solutions. I'm perplexed.