[Cin] Rendering tests

[Andrew Randrianasulu]

пт, 2 июн. 2023 г., 19:51 Andrea paz via Cin <cin at lists.cinelerra-gg.org>:

> Taking advantage of the fact that I compiled a version that uses
> system (external) ffmpeg, I did some comparative testing with CinGG
> appimage which uses an internal ffmpeg instead.
> I report the results:
>
> Source: blender movie "Tears of steel" 1080p, webm
> (Used an interval of the first 1440 frames via In/Out Points)
>
> mp4; preset h264.mp4
> ffmpeg internal --> render at 117.4 fps (25.4MB)
> ffmpeg external --> render at 175.3 fps (22.8MB)
>
> mxf; preset DNxHR 444
> ffmpeg internal --> render at 92.9 fps (1.8GB)
> ffmpeg external --> render at 120.5 fps (1.8GB)
>
> I had already noticed that ffmpeg from the command line (external) was
> faster than ffmpeg inside CinGG; but now we see that even external
> ffmpeg called up inside CinGG is still faster than internal ffmpeg.
> What could be the cause of this difference?
>

Some optimizations in swscale,  decoders, and encoders?

If quality not suffer - this is a win!


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