because the maximum baud rate of a vt340 is i think 38400 baud, which is 3840 six-bit characters including the start and stop bits, so with four bitplanes (16 colors per pixel) you only get 5760 pixels per second; a full 800×480 frame thus takes a bit over a minute to paint, minus whatever areas the rle compression can remove
i think sending a byte stream of raw pixels with some framing information is a reasonable thing to do for many applications, even at 32bpp, but you can do a lot better than sixel
because the maximum baud rate of a vt340 is i think 38400 baud, which is 3840 six-bit characters including the start and stop bits, so with four bitplanes (16 colors per pixel) you only get 5760 pixels per second; a full 800×480 frame thus takes a bit over a minute to paint, minus whatever areas the rle compression can remove
i think sending a byte stream of raw pixels with some framing information is a reasonable thing to do for many applications, even at 32bpp, but you can do a lot better than sixel
x11 for example