[FFmpeg-user] XDCAMHD422 Syntax questions - qmin qmax

[Christoph Gerstbauer]

Thank you guys!

I will uses qmax 12 too, because when using trellis instead of qmax  I lose
encoding speed.

Am Mi., 20. Juni 2018 um 00:18 Uhr schrieb Marton Balint <cus at passwd.hu>:

>
>
> On Tue, 19 Jun 2018, Christoph Gerstbauer wrote:
>
> > Hello;
> >
> > I am using this syntax to generate a XDCAMHD422 file:
> >
> > ffmpeg -i inputfile.avi -map 0:v -map 0:a  -c:v mpeg2video -r 25 -pix_fmt
> > yuv422p -s 1920x1080 -aspect 16:9 -minrate 50000k -maxrate 50000k -b:v
> > 50000k -g 12 -flags +ildct+ilme -intra_vlc 1 -dc 10 -non_linear_quant 1
> -bf
> > 2 -qmin 1 -qmax 3 -top 1 -dc 10 -bufsize 36408333 -rc_max_vbv_use 1
> > -rc_min_vbv_use 1 -lmin "1*QP2LAMBDA" -vtag xd5c -c:a pcm_s24le -ar 48000
> > -vf "setfield=tff" -top 1 D:\targets\ffmpegXDCAM.mxf
>
> Bufsize seems wrong, you should check ffmbc for ideas how to create valid
> and compatible xdcam hd...
>
> https://github.com/bcoudurier/FFmbc/blob/ffmbc/ffmbc.c#L5215
>
> I personally use qmax 12, but I don't remember where that comes from.
>
> Regards,
> Marton
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