H264 Software

[Vanhalen]

HI can anyone recommend a good software that will allow me to alter the GOP Structure within a H264 File I need IBBBP

Thanks

[G_M_C]

HI can anyone recommend a good software that will allow me to alter the GOP Structure within a H264 File I need IBBBP

Thanks

Why ?

Do you always require this ? Or are there situations (like fast movement or scene-changes) where it is allowed to change ?

[Vanhalen]

I never got the right solution the only solution that will allow you to encode H264 with all the important info like SEI, Audio Delimter with a GOP Structure IBBBP start around 7k .

[G_M_C]

I never got the right solution the only solution that will allow you to encode H264 with all the important info like SEI, Audio Delimter with a GOP Structure IBBBP start around 7k .

Why you need GOP structure IBBBP. Always ?

[Vanhalen]

It's what the cable networks demand .

[G_M_C]

It's what the cable networks demand .

you could use x264's --qpfile system;

qpfile

Manual override to standard ratecontrol. Specify a file that gives the quantizer and frametype for specified frames. The format is 'framenum frametype quantizer'. For example:

0 I 18 < IDR (key) I-frame
1 P 20 < P-frame
2 B 22 < Referenced B-frame
3 i 21 < Non-IDR (non-key) I-frame
4 b 18 < Non-referenced B-frame

* You don't need to specify every frame
* Using -1 as the desired quantizer allows x264 to choose the optimal quantizer value, useful when only needing to set the frametype
* Having a large number of specified frame types and quantizers while still letting x264 choose intermittently decreases x264's performance


from http://mewiki.project357.com/wiki/X264_Settings

[Dark Shikari]

you could use x264's --qpfile system;



from http://mewiki.project357.com/wiki/X264_SettingsThat's rather overcomplex; why not just use --no-b-adapt?

[Vanhalen]

Thanks guys but I don't even know how to use this software is there a manual or website ?

[Fr4nz]

Thanks guys but I don't even know how to use this software is there a manual or website ?

Well, you could start to play with x264 settings through a simple GUI interface like the MeGUI one, which shows you also explanations about the various settings:
http://sourceforge.net/projects/megui/

A good source of informations about x264 is this:
http://mewiki.project357.com/wiki/X264_Settings

I suggest you to start from very simple (but effective!) settings like "tune" and "preset".

[Vanhalen]

Can email you guys personally the specs I really don't want to show them on a open forum ,.

[G_M_C]

That's rather overcomplex; why not just use --no-b-adapt?

oh yeah :p

Forgot all bout this, was only thinking on reasons as to why you would be forced to use such GOP's, and thus forgot about the more simpler solution.

[Vanhalen]

What about SEI's and Access unit delimiters

[kieranrk]

--aud

What SEIs in particular are you looking for?