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Speed Optimization
Taner Sener edited this page Jun 14, 2019
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2 revisions
By default, top level build scripts (android.sh, ios.sh and tvos.sh) build FFmpeg optimized for size. With the release of v3.0, --speed flag is introduced by build scripts to build FFmpeg optimized for speed.
This flag enables build optimizations that increase the speed of FFmpeg operations. Unfortunately these optimizations also cause library size to increase too much.
The following table shows the effect of enabling --speed flag on Android.
| arm-v7a | arm-v7a-neon | arm64-v8a | x86 | x86-64 | |
|---|---|---|---|---|---|
| default library size | 10765756 | 10991128 | 10959784 | 12687464 | 13505440 |
library size with --speed flag |
15185340 | 15250968 | 14707528 | 17726056 | 18473376 |
| difference | +%41 | +%39 | +%34 | +%40 | +%37 |
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