Video Stream

David
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7 months 1 week ago #29 by David

Video Stream was created by David

Just out of curiosity, a video stream from the SD card. Files to be written on a freshly formatted SD card for an ‘acceptable’ data rate. Conversion of the Goldorak opening sequence into 691 frames.

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Franck
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7 months 1 week ago #30 by Franck

Replied by Franck on topic Video Stream

Awesome ! I wonder if a RLE compressed sequence (decompressed using the line() function) would be faster.

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David
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7 months 1 week ago - 7 months 1 week ago #31 by David

Replied by David on topic Video Stream

I don’t think drawing an image line by line with line() would be faster than loading a fully decompressed one. In my tests, even copying 16-pixel lines with memset already takes quite a bit of time to fill a big area.
It might work with images made specially for RLE compression (no patterns, big flat colour areas, etc.).

But finally,when I did this test, I saw that you can get a perfectly smooth quarter-screen video.

Last edit: 7 months 1 week ago by David.

The following user(s) said Thank You: cponsard

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cponsard
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3 hours 14 minutes ago #104 by cponsard

Replied by cponsard on topic Video Stream

Hi great demo
I could test fine after a recompile
(maybe due to firmware change ?)
btw what is the role of that variable ?
cheers
christophe

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