Use filters that are in both FFmpeg and Libav
Use filters that are in both FFmpeg and Libav

PyAV-Org/PyAV,mikeboers/PyAV,markreidvfx/PyAV,PyAV-Org/PyAV,markreidvfx/PyAV,mikeboers/PyAV,pupil-labs/PyAV,mcpv/PyAV,mcpv/PyAV,mcpv/PyAV,pupil-labs/PyAV,pupil-labs/PyAV,markreidvfx/PyAV,pupil-labs/PyAV