MP4(3)

💅 MP4GetHintTrackSdp — it's giving "get the SDP for me bestie" ✨

okay so you're deep in the MP4 File Format Library, section 3 of the manual, and you found this lil page. welcome. sit down. hydrate. 🍓

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✨ NAME ✨

MP4GetHintTrackSdp — get the SDP media level description that's vibing with a hint track 🎀

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✨ SYNTAX ✨

#include <mp4.h>

const char* MP4GetHintTrackSdp(
     MP4FileHandle hFile,
     MP4TrackId hintTrackId
)

no cap, that's the whole thing. one include, one call, so simple it's iconic 💅

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✨ ARGUMENTS ✨

• hFile — the mp4 file you want this operation to happen to. your main character file. 🫶
• trackId — the hint track you want it to happen to. (yes bestie, the syntax calls it hintTrackId and this section calls it trackId — that's just how the page is written, we don't ask questions, we just pass the right one 💀)

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✨ RETURN VALUES ✨

the SDP media level description fragment that belongs to that hint track. that's the whole return value, she's lowkey chill like that. 🌸

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✨ DESCRIPTION ✨

so MP4GetHintTrackSdp hands you back the SDP (that's IETF RFC 2327, keep that receipt 📜) media level fragment associated with the hint track. a streaming server takes this and uses it to build a whole complete SDP description of the multimedia session that the file represents. like, the fragment is one piece and the server assembles the fit. 🧩✨

also, the mp4broadcaster test program that ships with the MP4 library is literally the example of using this call to create the complete SDP description. so if you're like "okay but show me", go look at her. she ate. 🔥

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✨ SEE ALSO ✨

• MP4(3)
• MP4SetHintTrackSdp(3)
• MP4AppendHintTrackSdp(3)
• MP4GetSessionSdp(3)

go read those too, bestie, iykyk 💜

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Cisco Systems Inc. — Version 0.9 — and that's the whole page, mwah 💖 thanks for reading, now go write some hint tracks ✨🦋