v0.31.0

removed AllocImage and AllocSamples that are considered useless using CGO until proven otherwise

v0.30.0

NewFilterContext has been removed, use NewBuffersinkFilterContext or NewBuffersrcFilterContext instead
args has been removed from NewBuffersinkFilterContext and NewBuffersrcFilterContext. Instead, after calling NewBuffersrcFilterContext, you need to use BuffersrcFilterContext.SetParameters then BuffersrcFilterContext.Initialize. You don't need to use anything else after calling NewBuffersinkFilterContext

make sure to call the IOInterrupter.Free method after using NewIOInterrupter

CodecParameters.CodecType and CodecParameters.SetCodecType have been removed, use CodecParameters.MediaType and CodecParameters.SetMediaType instead
HardwareFrameContext.SetPixelFormat has been replaced with HardwareFrameContext.SetHardwarePixelFormat
FormatContext.SetInterruptCallback has been replaced with FormatContext.SetIOInterrupter

use FilterGraph.NewBuffersinkFilterContext and FilterGraph.NewBuffersrcFilterContext instead of FilterGraph.NewFilterContext when creating buffersink and buffersrc filter contexts and use BuffersinkFilterContext.GetFrame and BuffersrcFilterContext.AddFrame to manipulate them. Use BuffersinkFilterContext.FilterContext and BuffersrcFilterContext.FilterContext in FilterInOut.SetFilterContext.
FilterLink has been removed and methods like BuffersinkFilterContext.ChannelLayout have been added instead