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Sony Vegas Pro 9.0c Rendering Black
I just recently ran into a problem that prevents me from rendering the entirety of a video I spent an large amount of time on.
Recently when I was editing my project (source is .mp4), I encountered a problem I had seen before. I was previewing my project and all of a sudden at a certain clip it began to flicker black (other clips worked fine). After this, now occasionally a few certain clips spread apart in my project will either flicker black as before, or will be a completely black screen. However, almost randomly, these clips will begin to work again after any series of actions (from what i’ve seen, minimizing and maximizing, zooming out of timeline, etc). The issue will return in a different clip, though. It’s important to note that the .jpg images I have placed in certain frames that go black ARE present, so the problem is with the HD video.
However, this problem becomes even worse when rendering. When rendering the video, if, while rendering, Vegas hits a frame that is black, the rest of the rendered video will be completely black. I’ve tried multiple formats with different settings, including rendering in identical settings to the project and source. Nothing seems to work. As I recall, what started this whole problem was simply moving a clip to a different location in the timeline – the difference here was that I saved the project after that and never moved the clip back, whereas before in different projects when I ran into this issue I just returned the clip to its previous position.
It would be quite difficult to do the same at this point seeing as to how much has changed, but I honestly don’t understand how they would help, seeing as how many clips before and after that one clip are having the black screen problem as well now.
These clips are .mp4 H.264 recorded off of an Xbox 360 with the Hauuppauge HD-PVR.
I’m honestly utterly confused at this point, and truly hoping I haven’t lost all my work due to this one error..
Please help.
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23 Replies
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I see that you are on Vegas Pro 9.0c which still has all of the bugs that were fixed in 9.0d and 9.0e. You may just be dealing with a bug that has already been fixed. I would upgrade to Vegas Pro 9.0e and see if that fixes your problem.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thanks for the quick reply, i’ll definitely try that – the update to 9.0e is free, right? Same codes and everything?
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Yes it’s free, the download is the full program and it installs over top of your existing installation.
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I installed Vegas Pro 9.0e, and i’m still having this problem. Any ideas as to what could be causing this?
I greatly appreciate the help thus far.
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As a side note,to potentially avoid this problem in the future, would it be preferable to use .m2ts files over .mp4? Seeing as how i’m rendering the files as .mp4 for YouTube, would quality be lost during re-encoding,and if so, how much lower quality would it be compared to .mp4 to .mp4? Finally (sorry about all the questions), is there a file size different in .m2ts compared to .mp4, and would it take longer to render .mp4 from .m2ts than regular .mp4 to .mp4?
Thanks in advance.
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Sorry for yet another post, but I discovered an interesting recurring situation; on crossfades and regular to-black fades, the problem seems to occur on the clip directly after said fade. Generally the clip will flicker repeatedly very quickly, then either go black or go back to normal. I discovered that when pre-loading a certain area (Shift+B), once the pre-loading hits a black flicker, the remainder of pre-load is a black screen, just like when rendering.
I also forgot to add that all clips worked perfectly fine and this problem was NOT present until recently, which is why I believe that I caused it somehow.
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It would be hard for one of us to determine what changed on your computer since they worked at one time. Where are the MP4 files coming from? If I was going to transcode them into come other format, I would use Cineform, or M-JPEG, or Huffyuv, but definitely NOT .m2ts which is just more painful MPEG4 compression.
Have you tried installing the x264vfw codec? That may improve things.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Just installed the x264vfw codec, i’ll see if it helped out later.
The .mp4 files are coming from the Hauppauge HD-PVR, a video encoder that I use to record HD files off of an Xbox 360. I am given the option of using .m2ts – I was just wondering if that would be a better choice solely because this problem might not be present with that format. I might try it sometime.
As for your last comment, i’m relatively new to the whole digital video scene – can you please explain what Cineform, etc, is?
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If you are using the Hauppauge HD-PVR I would use the .TS option. Those seem to play the smoothest. The XBox360 files are the worst option to use from my testing.
Cineform is an intermediary codec for HD editing. It would be overkill for what you are doing (DVR recordings). Switch to .TS files and see if they edit and play easier. They should.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Sounds good – and there won’t be any major drawbacks such as lower quality or long rendering times when rendering to .mp4 will there? (if i’m using .ts)
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