Kdenlive (Melt, MLT) Performance: OGG Vorbis vs. WAV


Wondering, whether it would increase rendering performance if I used WAV instead of OGG Vorbis audio files while rendering, I created a test case in the free, open source Kdenlive video editor on my Phenom 9550 2.2 GHz Quadcore machine.

The two test cases use a 1MB 1920×1080 JPG and either a OGG Vorbis (588KB) or WAV (8.5MB) file, both of which have 441.kHz, are stereo, 49 seconds long to render a 49 seconds 1080p (1920×1080) video.

The results (`time` was used to determine user CPU time):

OGG Vorbis WAV
Test 1 369.15s 367.66s
Test 2 368.29s 366.96s
Test 3 367.95s 367.86s
Average 368.46s 367.49s

This means a potential insignificant 0.26% speed increase when rendering a 41-second long webm with a WAV audio file instead of an OGG Vorbis file on a AMD Phenom 9550 Quad-Core machine.

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