blocky
====

## CMake command

When you built openh264 on `/home/user/openh264`:
```
cmake -DCMAKE_CXX_FLAGS=-isystem\ /home/user/openh264/codec/api\ -L/home/user/openh264 ..
```

## ffmpeg useful commands

```
ffmpeg -i in.mp4 -vframes 300 "%d.png"
```

```
ffmpeg -r 30 -i "%d.png" -vcodec libx264 -pix_fmt yuv420p out.mp4
```

```
ffmpeg -i src.mp4 -t 10s cut.mp4
```