AVC initialization parameters (mp4's stsd box contained)

[Nefast]

Hi guys !

In my attempt to deconstruct a X264 file, I'm reaching this obstacle.
Are these parameters (the metadata included in a stsd atom, after a visual sample entry) documented somewhere ?

Are they specific to H.264 standard or to X264 implementation ?

I've managed to discover that they include a SPS and a PPS, but some parts are still mysteries to me.

stsd
*Visual Sample Entry
*[size]-'avc'-[7 mysterious bytes :confused: ]-SPS-PPS

Thanks !

[mediator]

the avc configuration box ('avcc') is documented in ISO 14496-15. For understanding. it is also good to know about ISO 14496-12 and ISO 14496-14, which provide the context for ISO 14496-15.

[Nefast]

Thanks for your fast reply.
Nevertheless, is the ISO 14496-15 available free like the ITU H.264 for ISO 14496-10 ?
I'm unwilling to pay 102 CHF for a structure layout...

[mediator]

you may refer to an open-source implementation of ISO14496-15 (e.g. gpac), which is probably not as good as having the standard itself, but maybe it comes close to your needs.

[Nefast]

That was the solution. Thanks !