Supports zlib and Media-codec system libraries.Finally those are passed to the muxer, which writes the encoded packets to the output file. After filtering, the frames are passed to the encoder, which encodes them and outputs encoded packets. The decoder produces uncompressed frames, which can be processed further by filtering. When there are multiple input files, FFmpeg tries to keep them synchronized by tracking lowest timestamp on any active input stream.Įncoded packets are then passed to the decoder.
FFmpeg calls the libavformat library (containing demuxers) to read input files and get packets containing encoded data from them.
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