[FFmpeg-user] Lavfi video generator slow performance

[Elliott Balsley]

Yes, this RAID can write at 3000MBps.

> On Apr 5, 2018, at 17:22, Kieran O Leary <kieran.o.leary at gmail.com> wrote:
> 
> Hi
> 
>> On Fri, 6 Apr 2018, 01:11 Elliott Balsley, <elliottbalsley at gmail.com> wrote:
>> 
>> Thank you, with that suggestion I do get approximately double the speed.
>> But still my CPU usage is very low.  Is there any way to get more
>> performance out of this?
>> 
>> 
>> ffmpeg.exe -f lavfi -i color=color=red:s=3840x2160 -t 60 -pix_fmt rgb48le
>> -y -s 3840x2160 TIFF\output%4d.tiff
>> 
> 
> Well CPU could be low cos your disk can't keep up? Each Ultra HD 16 bit RGB
> frame will be about 47 megabytes. At 13 FPS,you're pushing over 600
> megabytes a second.  Are you expecting your disk to perform faster than
> this?
> 
> Best,
> 
> Kieran.
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