[x264-devel] Problem on using x264_encoder_encode

[Jason Garrett-Glaser]

On Tue, Aug 25, 2009 at 3:07 PM, Alessandro
Ferrari<alessandroferrari87 at gmail.com> wrote:
> 2009/8/25 Jason Garrett-Glaser <darkshikari at gmail.com>
>>
>> On Tue, Aug 25, 2009 at 2:57 PM, Alessandro
>> Ferrari<alessandroferrari87 at gmail.com> wrote:
>> > 2009/8/25 Jason Garrett-Glaser <darkshikari at gmail.com>
>> >>
>> >> > Ok, many thanks for support, you save me ;)  i try to install the
>> >> > last
>> >> > version and then I retry. I hope i don't meet again this problem,
>> >> > else i
>> >> > newly contact this mailing list. Only a last question, for disable
>> >> > lookahead
>> >> > i've only to put param.rc.i_lookahead = 0?
>> >>
>> >> Correct.
>> >>
>> >> Also, you can drop by #x264 or #x264dev on Freenode IRC (
>> >> irc.freenode.net ) if you want more realtime/interactive help.
>> >>
>> >> Dark Shikari
>> >
>> > I update the x264 version and I've add this line before calling the
>> > encoder
>> > function:
>> >
>> >     param.i_bframe_adaptive = 0;
>> >     param.rc.i_lookahead = 0;
>> >     param.i_bframe = 0;
>> >
>> > but the problem persists. Probably is not caused by frame delay.
>>
>> What is the problem you're talking about?  If you mean encoder_encode
>> not returning a frame in the first few frames of input, that's
>> normal--that's part of the frame delay.  Threads cause frame delay as
>> well, and by default, x264 will automatically pick multiple threads
>> depending on how many cores your system has.  To disable this, set
>> threads to 1.
>>
>> Dark Shikari
>> _______________________________________________
>> x264-devel mailing list
>> x264-devel at videolan.org
>> http://mailman.videolan.org/listinfo/x264-devel
>
>
> param.i_threads is set to one, but x264_encoder_encode( h, &nal, &i_nal,
> pic, &pic_out) return zero and i_nal=0 and nal=NULL...Probably is some hide
> error and i have to re-code my program, i don't know.

Read the API.  It returns a negative value if there is an error.

Come to IRC; it's far easier to deal with issues there than five dozen
posts back and forth on a mailing list.

Dark Shikari