<div dir="auto"><div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">пт, 2 июн. 2023 г., 19:51 Andrea paz via Cin <<a href="mailto:cin@lists.cinelerra-gg.org">cin@lists.cinelerra-gg.org</a>>:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Taking advantage of the fact that I compiled a version that uses<br>
system (external) ffmpeg, I did some comparative testing with CinGG<br>
appimage which uses an internal ffmpeg instead.<br>
I report the results:<br>
<br>
Source: blender movie "Tears of steel" 1080p, webm<br>
(Used an interval of the first 1440 frames via In/Out Points)<br>
<br>
mp4; preset h264.mp4<br>
ffmpeg internal --> render at 117.4 fps (25.4MB)<br>
ffmpeg external --> render at 175.3 fps (22.8MB)<br>
<br>
mxf; preset DNxHR 444<br>
ffmpeg internal --> render at 92.9 fps (1.8GB)<br>
ffmpeg external --> render at 120.5 fps (1.8GB)<br>
<br>
I had already noticed that ffmpeg from the command line (external) was<br>
faster than ffmpeg inside CinGG; but now we see that even external<br>
ffmpeg called up inside CinGG is still faster than internal ffmpeg.<br>
What could be the cause of this difference?<br></blockquote></div></div><div dir="auto"><br></div><div dir="auto">Some optimizations in swscale, decoders, and encoders?</div><div dir="auto"><br></div><div dir="auto">If quality not suffer - this is a win!</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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</blockquote></div></div></div>