MP4(3)

💖 MP4(3) — the MP4 File Format Library, bestie edition ✨

okay so real quick, this page lives in section 3 of the manual, under the MP4 File Format Library umbrella. today's main character is MP4SetODProfileLevel, and she's here to tell a file what the minimum MPEG-4 object descriptor profile + level has to be for anyone to render it. 🎀

🌸 NAME 🌸

MP4SetODProfileLevel — sets the minimum MPEG-4 object descriptor profile and level required to render the contents of the file 💅

✨ SYNTAX ✨

#include <mp4.h>

bool MP4SetODProfileLevel(
        MP4FileHandle hFile,
        u_int8_t profileLevel
)

🦋 ARGUMENTS 🦋

• hFile — the mp4 file you're doing this to. like, which file are we even talking about, bestie. this one. 👑
• profileLevel — the profile/level value you wanna set. the whole point of the function, honestly. 💜

💀 RETURN VALUES 💀

• success? you get true (1). slay. 🫶
• something went wrong? you get false (0). not slay. 😭

🌈 DESCRIPTION 🌈

okay so MP4SetODProfileLevel sets the minimum profile/level of MPEG-4 object descriptor support that's necessary to render the contents of the file. like, the bare minimum bar that has to be cleared. no cap.

ISO/IEC 14496-1:2001 MPEG-4 Systems defines these values, and you're gonna wanna know them by heart:

• 0x00 — Reserved 🙈
• 0x01-0x7F — Reserved 🙈
• 0x80-0xFD — User private 🔥
• 0xFE — No object descriptor profile specified 💫
• 0xFF — No object descriptor required ⭐

ngl the reserved ranges are reserved. do not go putting your own little values in there, that's not the vibe. 👀

🧚 SEE ALSO 🧚

• MP4(3)
• MP4GetODProfileLevel(3) — the reader to this writer, they're a matched set, iykyk 💖

Cisco Systems Inc. · Version 0.9 — that's the source and the version, periodt. go forth and set those profile levels, bestie, you got this 💅✨🦋