[FFmpeg-user] Problem with realtime MPEG-2 video encoding

[dE .]

On 02/16/12 17:52, Romeu Palos wrote:
> Hi
>
> I'm trying to encode mpeg-2 video in real time, CBR and fulllHD and it
> works just fine for a long time. But I realize with some video animations,
> with lots of colors and moviment, it get too slow and the real time is not
> achieved anymore.
>
> this is my command line:
>
> ffmpeg  -s 1920x1080 -r 30000/1001 -pix_fmt uyvy422 -i
> /tmp/ffmpeg_input-cSm8Za.yuv  -vb 15500000 -maxrate 15500000 -minrate
> 15500000 -bufsize 2583333 -vstats  -s 1920x1080 -r 30000/1001 -flags
> +ilme+ildct -top 1  -an -threads 12 -vcodec mpeg2video  -flags2 +fast
> -streamid 0:273 -f mpegts ->  /tmp/ffmpeg_output-yC91jH.ts1
>
> The video output need to be interlaced.
> There is any other switch that can make it faster?
> I tryed to use -me_method zero, but without success.
>
> When I use VBR it goes 4 times the real time, but it isn't an option.
>
> Thanks in advance.
> Romeu
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Thanks for the tip! CBR increases frame rates for screencasting.