Openh264 is a free sw codec (encoder and decoder), for details look at www.openh264.org .
Installation of Openh264 on MAC OS
1. Clone Openh264 project (openh264 folder is created automatically to keep sources)
git clone https://github.com/cisco/openh264.git
2. Enter to openh264 folder
3. Run mktargets.py to change Makefile to generate ‘h264dec’ binary (i.e. the decoder):
python ./build/mktargets.py –directory codec/console/dec –binary h264dec
4. Then make in 64-bits model
make ARCH=x86_64
5. The ‘h264_dec’ binary is created in ‘openh264’ folder
6. Run ‘h264_dec’ on 1920×1080 video:
./h264dec test.h264 test.yuv
Width: 1920
height: 1080
Frames: 2373
decode time: 54.185142 sec
FPS: 43.794293 fps
Notes:
- openh264 does not support hw decoding, replay of Openh264 support:
- openh264 does not support hardware decoding till now. However, in our private tests on Windows I7, we get mostly >100 fps for most cases.
- on MAC machine with GPU – Intel Iris 1536 MB, openh264 sw decoding of 1920×1080 provides ~44fps only.
For building Openh264 for Windows look at:
https://stackoverflow.com/questions/30045356/unable-to-build-openh264-lib-for-windows
23+ years’ programming and theoretical experience in the computer science fields such as video compression, media streaming and artificial intelligence (co-author of several papers and patents).
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