What are the spec of HP@L4.1 ?

[jpsdr]

Hello.

Can someone tell me please where i can find all the spec wich define the HP@L4.1 ?

Thanks.

[nurbs]

If your interest is just encoding parameters (resolution, VBV, reference frames, ect.) then Wikipedia (http://en.wikipedia.org/wiki/H.264#Levels).

[jpsdr]

Unfortunately, i need more information, specific on HP@L4.1.
In fact, i want to be able to know, looking with media info information, if a video stream is compliant or not to HP@L4.1.
This apparenty include also others parameters like b-frame for exemple. I didnt' know what else there is...
I already know this link, and i've not enough informations.

[Dust Signs]

Just look into the H.264 standard (document) itself, there are detailed tables for all profiles and levels regarding the parameters involved and their respective restrictions.

Dust Signs

[nurbs]

I can't think of any important limitations on HP@4.1 that aren't listed on wikipedia. B-frames don't matter unless you are targeting specific hardware like PSP, Blu-Ray, but the hardware players I tested (Popcornhour, WDTV, DXVA) didn't have any problems with an arbitrary number. (the files I tested were at most HP@3.1)

Mediainfo reads the profile and level from the file under "Format Profile". Of course you can tag the file any level you want, so this isn't really reliable. Apart from that you'd have to look more closely.
It also provides the number of reference frames and resolution so you can find out if DPB is violated. If the file was encoded with x264 you can read out all the settings, including VBV. Again this can be easily or changed, so it's not 100% reliable either. You'd have to use some other software to check VBV compliance if that is missing. I believe neuron2 offers a VBV checker on his website.

All in all, if the file was encoded with x264, the settings are still listed and you are targeting HP@4.1 and not some limited subset (e.g. blu-ray) you'd only have to check resolution, framerate, reference frames (maximum allowed depends on resolution) and VBV against what is mentioned on wikipedia.

[shon3i]

bframes have nothing with level. you can use max bframes if you want.

Stream is compilant if not exceed DBP for specified level, aslo VBV

[jpsdr]

Just look into the H.264 standard (document) itself
Dust Signs

Where can i find it ?

Edit : I find something in ref [6] of wiki link.
Is it the good one ?

[tph]

Where can i find it ?
http://www.itu.int/rec/T-REC-H.264/en

[jpsdr]

Thanks.