Am 07.08.2013 09:59, schrieb Luca Barbato:
On 05/08/13 14:04, Torsten Römer wrote:
Am 05.08.2013 13:21, schrieb Luca Barbato:
On 05/08/13 12:57, Luca Barbato wrote:
On 29/07/13 20:47, Torsten Römer wrote:
I would like to use the libx264 option --blueray_compat, and since
it is
not available as private option in libav, I tried to use
-x264-params as
described in the documentation, but this option is unrecognized,
even in
the current 9.8 release that I just downloaded and built. What am I
missing?
I'll add it, in the master branch you can use the x264-params to pass
the x264 raw params (see documentation).
To make it clearer -x264-params "bluray_compat=1" works as intended on
libav git.
lu
Nice, cheers!
Kieran pointed out bluray-compat=1 force-cfr=1 is the correct setting.
I added a shortcut -bluray-compat" to also set the encoder as cfr so you
can produce correct bluray bitstream with ease (assuming you are feeding
the encoder correctly).
lu
Very nice the shortcut, it will be very useful also for applications
like kdenlive (MLT?), where I think it may not be possible to pass raw
parameters with the -x264-params parameter.
It is just that libx264 now gives the following warning:
[libx264 @ 0x331d8e0] NAL HRD parameters require VBV parameters
I think two more libx264 parameters need to be set, --vbv-maxrate and
--vbv-bufsize as suggested here:
http://mewiki.project357.com/wiki/X264_Encoding_Suggestions#Blu-ray_Encoding
I added them to my local copy of libavcodec/libx264.c, set the suggested
values and indeed the warning goes away.
Torsten
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