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#31 |
Major Player
Join Date: Oct 2009
Location: Reno, NV
Posts: 553
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Re: Major Aliasing Problem
Sony Vegas and DVD Architect can't be used to master a 25p blu-ray iso. The main reason for this is that 25p is not part of the blu-ray standard. If you can do without the menus, it would appear more reasonable to render a true 25p mp4 file for playback on the media player.
The change in contrast may be due to a bug in the Vegas 8-bit rendering path concerning full versus studio swing levels. This bug is not as well known as it should be but easy enough to work around. http://www.hv20.com/showthread.php?4...l=1#post393460 Also check whether there is a sharpness setting that can be turned off in either the television or media player. |
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#32 |
New Boot
Join Date: Mar 2012
Location: Moss, Norway
Posts: 16
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Re: Major Aliasing Problem
Hello again :)
I've taken a couple of photos, to illustrate my problem. First photo is of my movie shown on the computer screen (preview in Vegas):: https://docs.google.com/open?id=0B2L...S1ZcVNBam9XTGM There is no aliasing problem (the moire comes from the bad cell phone camera...). The second photo is of the same snapshot from my movie, shown on a TV set (FullHD Sony TV): https://docs.google.com/open?id=0B2L...nFtNVZ4VXA2MFU There are obvious aliasing problems, as I understand it. Around the wires, you can see a major glare! The movie was shot in 1080p/25. Vegas project settings: https://docs.google.com/open?id=0B2L...Ho5eGlBYVF5aGM Rendering settings: https://docs.google.com/open?id=0B2L...EN0OXJGWEx0aVk I have tried rendering as progressive, but no difference. Since this is a MPEG2-file from Vegas (Main Concept plug-in), it is not possible to include a multi channel (5.1) audio file, so the 5.1 AC3 audio file must be rendered separately, and the two files merged in DVD Architect, which always outputs interlaced video format (I assume). Here is where the problem occurs, or what do you guys think? Rendering a MP4 file in Vegas, is also no option, since a multichannel audio file cannot be included. So, what should I do? Any help is highly appreciated! :) BR Dag |
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#33 |
Major Player
Join Date: Oct 2009
Location: Reno, NV
Posts: 553
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Re: Major Aliasing Problem
This is not aliasing. It looks like sharpening done using the "unsharp mask" method. The sharpening may be stronger in the horizontal direction. Is the media player connected to the television using analog cables?
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#34 |
Regular Crew
Join Date: Apr 2011
Location: Rochester NY
Posts: 104
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Re: Major Aliasing Problem
I agree with Eric, if your TV has a sharpness setting for that analog input (assuming you are
using an analog input) it is too high. There is not much vertical component to the halo so this is probably not related to interlaced versus progressive issues. |
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#35 |
New Boot
Join Date: Mar 2012
Location: Moss, Norway
Posts: 16
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Re: Major Aliasing Problem
The media player is connected to the TV via HDMI cable.
If I play the movie on the computer (Windows mediaplayer), using two screens: 1) PC monitor, and 2) TV (HDMI connected), the PC monitor displays the movie without any artifacts at all, whereas the TV shows this "halo effect", no matter how I adjust the TV (FullHD TV). The difference I can think of, being the fact that the PC monitor can display 1080p, whereas the TV can only display 1080i... Am I right? Where is the interlacing done? In the display card or in the TV? I thought f.ex. BBC broadcasted 1080p on satellite, and there is no artifacts at all watching those HD channels. Maybe the computer display card (and media player) outputs only interlaced to TV screens? Why? I'm really not sure they do that... Moreover, since the DVD architect packed this .m2v video file and .ac3 audio file (both from vegas) into one iso file (the unpacked to one .m2ts file) and played back on media player/computer, maybe DVD architect outputs interlaced video, since the bly-ray standard has no 1080p/25 option? If so, why does this interlaced output display correctly on a PC monitor, and with halo effects and "vibrating/aliasing" effects on the TV (wherever there is much details in a moving/panning image)? I am still totally confused, even though I feel we have now circled in the problem greatly... ;) Please help! BR Dag |
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#36 |
Major Player
Join Date: Oct 2009
Location: Reno, NV
Posts: 553
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Re: Major Aliasing Problem
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#37 |
New Boot
Join Date: Mar 2012
Location: Moss, Norway
Posts: 16
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Re: Major Aliasing Problem
I have tried two TV sets, both with the same problem:
1) Sony Bravia 4000, 52" (4 years old) 2) Phillips IntelliTV 55" (2 months old) Both full-HD 1920x1080. I've tried many different settings, without success. I will try once again, since you mention it. Thanks for helping! :) |
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#38 |
New Boot
Join Date: Mar 2012
Location: Moss, Norway
Posts: 16
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Re: Major Aliasing Problem
I've tried three different TV's, but no differences between them.
I've tried every available adjustments of the TV, with no success. Does media players and computers oversharpen HD-video output to TV screens by default? |
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#39 | |
Major Player
Join Date: Oct 2009
Location: Reno, NV
Posts: 553
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Re: Major Aliasing Problem
Quote:
Video Output FX->Sony Levels->Preset Computer RGB to Studio RGB while rendering. Also try Sony Broadcast Colors. It would be interesting if either of these filters fixed the problem with your video. |
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#40 |
New Boot
Join Date: Mar 2012
Location: Moss, Norway
Posts: 16
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Re: Major Aliasing Problem
The problem was finally solved!
Thank you all for valuable info. I appreciate it very much. Eric: You were right! I must have overseen the sharpness control in the TV setup menu, or underesteimated it's influence (can't exactly remember). Anyhow, the sharpness setting was only at "10", on a scale from 0 to 30. Turning it down to zero, solved the whole problem! This setting really caused lot's of frustration, and I found it hard to believe that it was so powerful, and causing that many artifacts. Now life is much easier :) |
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