Audio renders with gaps?!?!

Maestro wrote on 6/30/2003, 2:00 PM
I hope someone else has seen this to confirm my sanity, but about 1/3 times I render any audio with Vegas 4c, at some point in the rendered audio I get stuttering, showing up as visible gaps of silence in the waveform. Note that this is not related to playback or recording, but in rendering--including the prerendered files when printing to tape.

For what it's worth, all of my audio is 48kHz (for DV/DVD), but there are NO track or audio event FX, and NO resampling must be done. The gapping can start at the beginning of the file, end of the file, middle, you name it, with no predictable pattern. On a failed render, I'll delete the file and re-render again, this time with a good file or the gapping will be in a totally different place. Once the gapping starts, it will continue to the end of the file--it will never "clean up" and be smooth from that point on.

Any help, tips, or even confirmation is most appreciated.

Comments

PipelineAudio wrote on 6/30/2003, 2:19 PM
[edited]

try an experiment, do renders at different time zoom levels as well and see what happens
stakeoutstudios wrote on 6/30/2003, 6:38 PM
the best tip I've come up with so far to get round this HORRIBLE bug that's kept me working late for free all week is...

move your entire song along further into the timeline. Now set a loop region to render with big amounts of nothing on either side of the song.

Trim the output file as required (soundforge, or new vegas session if you dare)

I'm not sure if this is fullproof yet but it worked for me today...
Maestro wrote on 6/30/2003, 7:05 PM
I'll give that suggestion a try for normal renders, but it obviously won't work for print to tape. With any luck, I won't be doing too much of that.

One thing's for certain though--you did confirm that I'm not crazy. And I will agree with you, for an NLE that is so well-known and admired for its audio capabilities, this bug is a huge setback.
Maestro wrote on 6/30/2003, 7:08 PM
Tried your suggestion on about five different zoom levels, and it didn't make a difference. Thanks for the idea though. Truly frustrating, especially since it has no repeatable pattern.
stakeoutstudios wrote on 7/1/2003, 3:59 AM
Try changing the project's mixer to the same as all the files on the timeline, and render at the same quality. It may work.

if not, then try rendering at 16bit 44.1khz...

this was something else that worked for me... sometimes...