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| rjisinspired |
| Posted: Jun 12 2011, 04:46 PM |
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Advanced Member
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This isn't a deshaker issue but an issue I have noticed more as of recent. When adding a dissolve I notice that a part of the video, inside and outside of the dissolve, jumps and sometimes has colored artifacts within it.
Part of the effect is a repeat of past or future frames. Is this a non key frame issue on cutting? I thought MJPEG was all key frames so I'm not sure if that is the problem. These effects don't happen when using say huffyuv or uncompressed AVI. |
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| phaeron |
| Posted: Jun 12 2011, 08:08 PM |
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Virtualdub Developer
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Is Vegas treating the MJPEG video as interlaced, perhaps?
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| rjisinspired |
| Posted: Jun 12 2011, 08:31 PM |
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Advanced Member
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As I look back at the project properties for field order it's set to progressive and the deinterlace method is on blend fields. I'll have to set the deinterlace setting to "none" and try it again.
Update: when I set a new project and use a custom template for my Jazz cam, the deinterlace method goes back from "none" to "blend fields" after importing the MJPEG? That is strange. |
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| rjisinspired |
| Posted: Jun 12 2011, 08:50 PM |
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OK. After putting the deinterlace method back to "none" a second time, the setting seems to hold. |
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| rjisinspired |
| Posted: Jun 27 2011, 03:36 PM |
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Hmmm. The effect is happening once again and I made sure that the deinterlace setting is on none. Is MJPEG all keyframes or are there MJPEGs that have reference frames as well?
Here is a mild example of the effect during a dissolve that I'm talking about:
http://rjschat.dyndns.org:8080/paranoha/ap...e-example-1.avi
The above is mild, it can get worse than this sometimes. Bad where there can be psychedelic color changes and blockiness even way before and way after the transition or dissolve takes place. It always happens when performing a transition or a dissolve.
If I move the video piece where it doesn't make a transition or a dissolve it plays fine, sometimes. Sometimes you can even see repeated frames from past or future frames in the video, stuttering in a small section of the video itself. This is what is telling me that these MJPEGS must have P, B or some other kind of frames besides I frames but I always thought that MJPEGS were all keyframes?
I was told to use "quantize as frames" but that hasn't helped anything.
I don't get this as often with Flip videos but I get these more with the MJPEGS from my Jazz camera.
Update: I don't know if this means anything but the ends of segment and sometimes anywhere in the video track the preview will be "red"? Does this mean there is a problem with the video in general? |
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| rjisinspired |
| Posted: Jun 27 2011, 03:43 PM |
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Advanced Member
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Huh, now the video is playing black, sometimes it plays fine? I'm really confused now.
These videos are only cheapo, standard 640 X 480, MJPEG. My system should be more than capable to handle these without a sweat. |
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