Johan Lundqvist
Forum Replies Created
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Thanks guys! I’ll think ahead next time!
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Thank you!
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Hi!
Every clip that I’ve edited had a variable bitrate of 9 100 000 before I started working with it. I don’t know if you’ve read the whole thread, but if I set the bitate to vbr 9 100 000 (as max) the “no recompression”-sign show during most of the rendering. The problems is that my cuts look horrible if i render with that bitrate. This is because the cuts are not at the I-frames as far as I can understand. If all my cuts were at I-frames, then the “no recompression”-sign would show during the whole rendering process and I would not loose anything at all during rendering. Since Vegas has no way of showing where the I-frames are, most of my cuts are not at I-frames.
Because of this, I’ve decided to render my movie with another bitrate than vbr 9 100 000 (max).
If I choose for example: Variable bitrate (max 9 500 000, average 6 000 000, minimum 192 000); then there is some quality loss across the whole movie (and the “no recompression”-sign is not constant during rendering), but the cuts look good.
My .mov-files are not fully downloaded yet. I’ll get back to you when they are.
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I’ve tried some crossfading but I’m not too happy about it. Well, I think I give up now on the “No-Compression…”-thing. Instead, I’ll try to look for the optimal “wrong” bitrate when rendering in Vegas.
I´m thinking about setting the bitrate to constant on 9 200 000. Or perhaps variable with a maximum of 9 200 000, average of 6 000 000, and a minimum of 4 000 000. The default minimum, 192 000, sounds very low. Do you have any ballpark suggestion?
One last question: Right now, I’m downloading 26 GB of film, split onto two files .mov-files, filmed with a normal DV-camera (a friend of mine filmed my wedding with his camera and I’ll edit myself in Vegas). Is it possible to cut .mov-files in Vegas and use the right bitrate during rendering without getting the problem I just had?
Well I guess these were my last questions to you for now. You’ve been extremely helpful and I have learned a lot! Two weeks ago, I had never edited movies at all, so forgive me for my noobie questions… Thank you very much, John!
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Ok, I understand. But I still find it strange that Vegas can’t compensate this in any way – or that Vegas can’t find I-frames automatically if I’d like the program to. The way I understand it, it’s all about luck if I cut the movie in Vegas and render it in the right bitrate. On every cut I have less than 10 % chance of cutting at a right spot. If I don’t cut at a right spot, there’s a big chance that the cut will look very strange if rendered in the right bitrate. This means that Vegas forces me to use a bitrate I know is wrong, in order to recompress the movie from the beginning.
The “No recompression”-thing seems totally pointless – even for people with other cameras. If the cutting is made in Vegas that is. Would you agree?
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I´ve been looking at the Womble-program. Perhaps it´s ok, but it doesn´t seem very user-friendly.
I still want to solve this thing in Vegas. It seems absurd that now – when I finally know the right bitrate – that same bitrate should totally mess up parts that were ok when the bitrate-setting was wrong! Any suggestions?
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Before I start with Womble – don’t you think that there’s any setting(s) in Vegas that would make the cuts look ok? The picture looks so fine now in between the cuts, and it feels like I´m very close to what I want to achieve.
I mean – the cuts were never a problem before when the overall quality was weakened. Now the quality is great, but the cuts are horrible. Right now, I would have to go with my previos settings if I wanted to make a DVD. The bad cuts are much worse than the quality issue I had before.
Well, I might start looking for a new camera. But the thing is I have 2,5 years of footage stored on mini-DVD:s that I’ve edited. Even if I buy a new camera, I still want to make the best of the content on my mini-DVD:s.
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I have found one way to improve the picture at the cuts – setting the bitrate to constant 9 100 000. When you do this, the picture in itself looks ok (and the “No Rec…”-sign i shown during rendering. But one problem remains – and this problem was there with the variable bitrate as well: There are som “time-shifts” at the cuts. The picture is not “flowing” and it looks like there are several cuts sometimes. This sensation is best seen when the cut is made at a place where there is motion in the picture (so it could be hard to detect it in the 4 sec clip).
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By the way, I just noticed that the only thing I really had to change in my previous settingss to get the “No Rec…”-sign constant (on parts with no cuts) during rendering was to change the maximum bps to 9 100 000.
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Wow, you made it! You are a genious, thanks!
I thought all my problems were solved, but unfortunately I have discovered a new problem when I use the new settings…
I have made a few projects in Vegas and I tried to render one of them with the new settings. It worked out fine during the rendering process and the “No Recompression”-sign was constant in the preview-window for most of the time. Sometimes the sign disappeared for a very short time on places where I had made cuts in Vegas, but I didn’t expect this to be a problem. However, this really turned out to be a problem.
When I rendered with my previous settings, there was some loss in quality during rendering. The quality loss was however stable throughout the rendered file and there were no special “quality-dips” on places where I had made cuts.
Now, there are on many occasions severe “quality-dips” on places where I have made cuts. This means that the picture quality now is excactly the same throughout most of the movie – but on places where I have made cuts in Vegas, it’s much worse than it was before. You look at the movie and its like “oh, yes, the picture quality is not altered at all” and then there is a cut made in Vegas and its like “what just happended there, it looked horrible”.
This can be seen if you use the 4 sec clip I put on the internet.
For example: Take the 4 sec clip and put it 10 times after each other in Vegas. Then render with the new settings. At first the “No recompression…”-sign blinks one time (this does not seem to affect the quality though) and then its constant during the whole rendering process. BUT – if you then try to do a few cuts in the project, you’ll notice that the “No recompression”-sign starts blinking when you render. It blinks every time you’ve mad a cut. If you look at the movie after rendering, you’ll notice that the quality-loss is severe around some of the cuts (not all perhaps, but some). Unfortunately this 4 sec clip hasn’t got much motion in it – but I can assure that it looks much worse when you’ve make cuts during motion.
Do I make straight cuts? Well, I don’t know how to make them more straight. I highlight the part I want to get rid of by pressing the left mouse-button and draw the mouse over the unwanted area. Then I push the delete button.
And if there is nothing wrong with my cutting technique, is there anything left to be done when it comes to settings?
Is it possible to make cuts in a project and still have the “No recompression”-sign constant during rendering? If not – is there any way to make the quality loss smoother around the clips?