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Author Topic: Four Level Grayscale Video  (Read 28940 times)

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Offline Ikkerens

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Re: Four Level Grayscale Video
« Reply #60 on: February 01, 2011, 01:04:25 pm »
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Offline DJ Omnimaga

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Re: Four Level Grayscale Video
« Reply #61 on: February 01, 2011, 03:13:21 pm »
This is too epic ;D

Now I wonder if monochrome videos combined with sound would be doable on a 15 MHz calc?
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Offline JosJuice

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Re: Four Level Grayscale Video
« Reply #62 on: February 01, 2011, 03:15:33 pm »
Quote from: DJ Omnimaga on February 01, 2011, 03:13:21 pm
This is too epic ;D

Now I wonder if monochrome videos combined with sound would be doable on a 15 MHz calc?
And if it's possible, would compression be too hard? I have a feeling that video+audio files will be very large...
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Offline kindermoumoute

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Re: Four Level Grayscale Video
« Reply #63 on: February 01, 2011, 03:23:51 pm »
Quote from: thepenguin77 on February 01, 2011, 12:34:59 pm
It just happened. The first ever true calculator Rick Roll.



Description:
Quote
Using my new program for the 84+, FourVid, I am able to play 4 level grayscale videos on the calculator. Then by combining that with my other program, TruSound, I am able to play videos sync'd with sound!

Obviously this is on an 84+SE. Both the sound and video files are 1.3MB in size, which means that I had to clear the memory on both of them before I started.

Here are the files needed to play it. Just note that the sound file is clocked for wabbitEmu (15MHz) so it will run too fast on a real calculator (16MHz).

Also, if you have sent any of my videos to your real calc. You may have noticed that you are missing some memory. This is because some of the app pages started with $FF and the calculator won't delete them. So the only way to get the memory back is to back up everything on your computer and then clear All Mem. This RickRoll video also suffers from the same problem. Sorry about that. I'll fix that soon.

Haha, the files are too big for this post. Video, player, song.



It work perfectly on wabbitemu, I didn't know a sound like this can be listen on 84+.
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Offline thepenguin77

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Re: Four Level Grayscale Video
« Reply #64 on: February 01, 2011, 03:24:08 pm »
Compression is almost certainly impossible. I could actually almost see this being easy as a matter of fact. Just interlace the video and sound byte for byte and during the time that was previously used to decompress, write a byte to the screen.

Using this strategy, the video would be forced to run at 27 fps and the filesize would be 44KB/s (0.91DCS/s). Meaning 34 seconds of video. But it's possible.

Clearly no grayscale though. Sound requires uninterrupted CPU time and grayscale requires interrupts.
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Offline DJ Omnimaga

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Re: Four Level Grayscale Video
« Reply #65 on: February 01, 2011, 03:26:23 pm »
I see. It wouldn't be possible to make the video run at lower FPS?
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Offline thepenguin77

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Re: Four Level Grayscale Video
« Reply #66 on: February 01, 2011, 03:31:56 pm »
Well, maybe. The video and audio have to be interlaced in some easy fraction. So assuming 23000 bytes per second on audio and 800 bytes per screen (768 + driver commands) 1/2 would be 14.5 fps. Which I guess is perfect. That was easy.
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Offline DJ Omnimaga

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Re: Four Level Grayscale Video
« Reply #67 on: February 01, 2011, 03:33:33 pm »
Well what I mean is couldn't the same video data be re-used every 2 frame? Or is that what you mean? 14.5 fps seems reasonable too because on-calc high FPS is blurry anyway.
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Offline thepenguin77

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Re: Four Level Grayscale Video
« Reply #68 on: February 01, 2011, 03:38:14 pm »
Yes, that is exactly what I mean. So instead of video sound video sound video sound. It's video sound sound video sound sound.
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Offline Builderboy

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Re: Four Level Grayscale Video
« Reply #69 on: February 01, 2011, 03:40:32 pm »
Wow O.O I think my brains just exploded out of my ears
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Offline Deep Toaster

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Re: Four Level Grayscale Video
« Reply #70 on: February 01, 2011, 03:44:47 pm »
Quote from: thepenguin77 on February 01, 2011, 12:34:59 pm
It just happened. The first ever true calculator Rick Roll.

Second. You were beaten by apcalc :D

But either way, the graphics are absolutely incredible! And is that the full song?
* Deep Thought lost the Game in joy

EDIT: HOLY CRAP IT HAS SOUND! :crazy:
« Last Edit: February 01, 2011, 03:58:41 pm by Deep Thought »
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Offline FinaleTI

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Re: Four Level Grayscale Video
« Reply #71 on: February 01, 2011, 03:50:08 pm »
Quote from: Deep Thought on February 01, 2011, 03:44:47 pm
Quote from: thepenguin77 on February 01, 2011, 12:34:59 pm
It just happened. The first ever true calculator Rick Roll.

Second. You were beaten by apcalc :D
But what about this?
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Offline DJ Omnimaga

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Re: Four Level Grayscale Video
« Reply #72 on: February 01, 2011, 03:54:27 pm »
That was fake :P
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Offline FinaleTI

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Re: Four Level Grayscale Video
« Reply #73 on: February 01, 2011, 03:59:45 pm »
It's still funny.
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Spoiler For Projects:

My projects haven't been worked on in a while, so they're all on hiatus for the time being. I do hope to eventually return to them in some form or another...

Spoiler For Pokemon TI:
Axe port of Pokemon Red/Blue to the 83+/84+ family. On hold.

Spoiler For Nostalgia:
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Offline ztrumpet

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Re: Four Level Grayscale Video
« Reply #74 on: February 01, 2011, 04:32:09 pm »
That's incredibly.  I'm amazed.  Again.  Wow.  O.O
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