vidio video format

its video, but simple

why

its basically like ppm but video, the format is literally raw bytes, nothing else:

(2 bytes)   unsigned char magic[2]         (should usually be 'vi', but its ignored)
(4 bytes)   unsigned fps                   (frames per second)
(4 bytes)   unsigned width                 (width of the canvas)
(4 bytes)   unsigned height                (height of the canvas)
(whn bytes) unsigned char frames[n][w][h]  (all of your framas)
 ^^^ w = width; h = height; n = frames_count
     all data in this array is a continuous  arrat of rgb values:
     e.g. {
             255, 255, 255,
             0,   0,   0,
             255, 0,   0,
          }

and its very easily convertable to other simple media formats, for example PPM P6 format, renderer/converter comes already implemented and the default lib is fully compatible with C89, also, this format is very extensible, at first i thought i might add support for alpha values but then thought theyre quite useless in this case, if you will just add alpha field to the VidioPixel struct:

typedef struct {
    unsigned char red, green, blue, alpha;
} VidioPixel;

thats all you need to add support for alpha, just make sure to also have alpha in your data array when generating:

{
    255, 255, 255, a,
    0,   0,   0,   a,
    255, 0,   0,   a,
}

or, well, in the pyhton test script:

bytearray((255, 255, 255, a) * 100 * 100 * 60)  # 60 100x100 frames

but if youll use vidio_render_frame_to_ppm, you should adapt it to use your new format

why not ?

its not a widely supported, established format of video, i only added fps option for future when ill actually be implementing viewing video on some viewer, maybe mpv ? well see :)

still wanna see what you generated ?

run this

$ mpv "mf://frames/*.ppm" -mf-fps <fps>

this will show you your whole video

lib

see include for the source code of the library :)

example usage

example usage can be found in the src folder, you can generate your own blank, fully white vidio file using the test.py script, it will generate a test.vi file which you can then pass to vidio.elf after compiling with ./build.sh :

$ python3 scripts/test.py

$ rm -rf frames && ./build.sh -r test.vi

$ mpv frames/

make sure frames directory is never present, im too lazy to add checking for it in the example

the example python script also implements another view on the format, if you want something to reference very quickly, take a look at the test script :)