Vegas Pro 9 Creates Squiggles In Final Video Result

[D. Eric franks]

I can’t tell what you are talking about, but that might be because I’m not sure what the original video is supposed to look like. I DID see some macroblock encoding errors at 00:15 (and elsewhere I think), not unlike what you see on television when the signal breaks up for a frame or two. This can be corrected (and maybe the squiggle/wave thing I can’t see) with a higher data rate: kick it up as high as you dare. I’d render MainConcept AVC/H.264, data rate in the 10-14 Mbps range. Actually I’d go higher if I could, but YouTube has been choking on my higher data rate video lately for some unknown reason and it never chokes until the video has completed uploading (error), which is intensely frustrating, so all I can tell you is 14 Mbps works, higher might too, but 20 Mbps errors.

[Odd Magne nilsen]

Do you gain any quality using higher than 6Mbps?

odd magne nilsen

newbie

[Dustin Lee]

@ odd magne nilsen:

Bit rate and quality are fairly proportional, but it depends on a whole number of factors. Some factors include the pixel ‘motion’ in the video footage, encoder quality, and similarities of adjacent colors. If the source footage has a lot of very similar values of gray, for example, it might be more prone to averaging those colors together into the same color at a lower bit rate. It’s easier to compress many pixels of the same value. But that isn’t always the case. Good encoding algorithms can make quite a difference, as can increasing the bit rate.

But yeah it can make a big difference. After a while, the quality can’t get any better, but your bit rate could keep going and just waste processing cycles, and 6 Mbps isn’t usually anywhere near that point.
—————

Back to the matter at hand: Squiggles

I agree that I don’t know what the ‘squiggles’ refer to, but the macroblocking and jumps in the footage are often encoding-related. Hard to tell exactly what caused them. What are your render format and settings?

– Dustin Lee

[D. Eric franks]

Yea, I’m not suggesting any sort of magical best size/quality data rate, I’m just saying that when uploading to a service that is going to re-encode anyhow, you might as well max out your data rate, since it is effectively just an intermediary anyhow. Can you see the difference between 6 Mbps and 14 Mbps? Maybe not, but it can’t hurt.

[Norman Willis]

Um, you did that whole thing in Vegas?????