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assiduous
Account closed
Registered: Jun 2007
Posts: 343 |
saving the screen
hi
I seek some way to save the screen on a real C64. I need to save everything from the screen (or asmuch as possible). Im equipped with Action Replay7 and i have already tried to tamper with the freezer options but it seems that with freezing certain elements from the screen are lost like raster bars or other effects. i also tried using the backup option in AR7 which saves the executable of the frozen C64 state but that doesnt seem to save the necessary elements of the screen either (they are generated in the next frame after executing the snapshot and thats not what Im after).
thx for any help. |
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ptoing
Registered: Sep 2005
Posts: 271 |
Emulator screengrab might work, no? I guess depends on the effect in some cases, but Vice is getting rather really good. |
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Jon
Account closed
Registered: Apr 2005
Posts: 247 |
I imagine a screen shot of a stretched image at 1366x768 would appear rather blocky and it'd be easier to count the pixels.
J |
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assiduous
Account closed
Registered: Jun 2007
Posts: 343 |
ptoing: VICE doesnt display the pixels i want to analyse atall. i'd grab a screen from Hoxs64 normally but the thing is that the (side-)effects i want to have a look at are not emulated correctly in any emulator (yet,some of them should be slotted in the next Hoxs64).
Ninjasbane: not really,an LCD TV performs some blurring to make a lower resolution video look better in the HD resolution,for example hires white dots every second pixel form a grey solid line ! |
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chancer
Registered: Apr 2003
Posts: 346 |
well apart from using an emulator , and perhaps snag it.. or save out as AVI without compression..
you can make/get a composite cable, and use the audio/video out on the back of the c64.. and get a usb capture device that supports composite / rgb input into ya pc.
there are a few things that do a cleaner freeze state MMC's expert cart software (AlexC I haven't forgotten..hehe)..
as you said , your doing it via HD tv? doesn't it have a vga input.. would be cleaner if you used the PC due to the refresh rate being higher in windows.
or can you adjust the tv / monitor to different modes?
I guess you could buy something to up the refresh rate so it's better suited for HD, but I'm suprised it's not backward compatible. I would go for the capture device into a pc though, you just wanna record something right?
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AlexC
Registered: Jan 2008
Posts: 298 |
Quote: well apart from using an emulator , and perhaps snag it.. or save out as AVI without compression..
you can make/get a composite cable, and use the audio/video out on the back of the c64.. and get a usb capture device that supports composite / rgb input into ya pc.
there are a few things that do a cleaner freeze state MMC's expert cart software (AlexC I haven't forgotten..hehe)..
as you said , your doing it via HD tv? doesn't it have a vga input.. would be cleaner if you used the PC due to the refresh rate being higher in windows.
or can you adjust the tv / monitor to different modes?
I guess you could buy something to up the refresh rate so it's better suited for HD, but I'm suprised it's not backward compatible. I would go for the capture device into a pc though, you just wanna record something right?
Thanks for remembering about me ;) Coming back to topic - I think this could be very good solution. If I understand it correctly the objective is to analyze some vic effect so actually recording few frames are better than just static screen shot. |
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assiduous
Account closed
Registered: Jun 2007
Posts: 343 |
thanks for all the replies.
as i said earlier using an emulator is out of the question- the effects i want to analyze dont seem to be emulated accurately in any of them.
i tried all different display modes that are available but with none of them I could get rid of scaling/blurring. if I could display it 1:1 or 2:1 without any blurring,that would do the trick but I seem unable to do so with my TV.
I dont know what you mean by the refresh rate being higher in Windows. afaik the refresh rate depends on the monitor/TV used. my TV refreshes at ~50FPS,the LCD monitor at ~60. any way i have no idea what benefit a higher refresh rate could make.
the usb capture device sounds like an idea to consider. I think that recording a few seconds of ~50 FPS video instead of just a static screen could come useful in analyzing some dynamic effects. if i understand it correctly I would get a clear digital 403x284 VIC output without any blurring distortions etc? and the fact that Im connecting this device to a 26 years old machine wouldnt really matter ? then thats something I am looking for. I would need a new cable probably- now Im using a standard 2 cinch audio-video cable. |
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assiduous
Account closed
Registered: Jun 2007
Posts: 343 |
OK done some insight. there are lots of seemingly cheap USB video capture devices. but one thing is abit worrying. The technical specifications usually say something like "25 FPS PAL". does that mean that adjacent frames would be blent into each other? :( thats not good,would disqualify it from being usable with any kind of effects that involves shifting pixels each frame. |
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JackAsser
Registered: Jun 2002
Posts: 2014 |
Quote: OK done some insight. there are lots of seemingly cheap USB video capture devices. but one thing is abit worrying. The technical specifications usually say something like "25 FPS PAL". does that mean that adjacent frames would be blent into each other? :( thats not good,would disqualify it from being usable with any kind of effects that involves shifting pixels each frame.
"clear digital 403x284 VIC output without any blurring distortions etc." will never happen... The VIC chip outputs a PAL-signal which inherently due to how PAL works WILL be blurred. I.e. chroma with half horizontal resolution than luma. To get a really clear image please try to exploit the bugs using only black and white. That would give you as much resolution as possible due to lack of chroma. |
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MagerValp
Registered: Dec 2001
Posts: 1074 |
Most capture devices "deinterlace" even progressive signals down to 25 fps, either by blurring or by weaving. Some do proper 50 fps, but it tend to be undocumented, so it's a little hit and miss...
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Radiant
Registered: Sep 2004
Posts: 639 |
MagerValp: Can you mention a device that does 50 fps? I've been thinking about getting one. |
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