MP4(3)

💖 MP4(3) — the MP4 File Format Library, but make it a group chat 💖

okay bestie, welcome to MP4(3), the manual for the MP4 File Format Library 🎀 this little corner of it is all about RTP hints, and honestly? it's giving "quiet but essential." let's get into it 🦋

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✨ NAME ✨

MP4GetRtpHintNumberOfPackets — get the number of packets in an RTP hint. that's it, that's the whole job, and she does it flawlessly 💅

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🌸 SYNTAX 🌸

#include <mp4.h>

u_int16_t MP4GetRtpHintNumberOfPackets(
     MP4FileHandle hFile,
     MP4TrackId hintTrackId
)

look at that signature. clean. iconic. no notes 🔥

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🫶 ARGUMENTS 🫶

• hFile — the mp4 file you're operating on. yes, the whole file. she's the main character here 👑
• hintTrackId — the hint track you're operating on. this is the specific track getting the attention, as she deserves 💜

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⭐ RETURN VALUES ⭐

• if everything slays: you get the number of packets in the current RTP hint 🎉
• if something went wrong: you get 0 😭 and yeah, that's the error signal, so don't just assume zero packets, okay? check yourself before you wreck yourself.

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💅 DESCRIPTION 💅

MP4GetRtpHintNumberOfPackets returns the number of packets contained in the current RTP hint — and current is doing a lot of work in that sentence, bestie, because that hint is the one established by a call to MP4ReadRtpHint(). no call to MP4ReadRtpHint() first, no current hint, so like… read the hint first, then ask how many packets are in it. order of operations, we love her 🙈

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🌈 SEE ALSO 🌈

• MP4(3)
• MP4ReadRtpHint(3)

go read MP4ReadRtpHint(3) too, fr fr, she's literally the prerequisite 🧚

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ngl the whole "return 0 on error" thing is a vibe check trap: 0 is a valid-looking answer AND the error answer. just know that going in 💀

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and that's the page, bestie!! this one came to you from Cisco Systems Inc., Version 0.9, filed under MP4(3) — stay hydrated, read your hints before you count them, mwah 💖✨