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Defined in avcodec.h

Encodes a subtitle frame from sub into buf.
The avcodec_encode_subtitle() function encodes a video frame from the input sub. To encode it, it makes use of the video codec which was coupled with avctx using avcodec_open(). The resulting encoded bytes representing the frame are stored in the output buffer buf.

int avcodec_encode_subtitle(AVCodecContext *avctx,
                            uint8_t *buf,
                            int buf_size,
                            const AVSubtitle *sub);

AVCodecContext *avctx

The AVCodecContext codec context.

uint8_t *buf

The output buffer for the bitstream of encoded frame.

int buf_size

The size of the output buffer in bytes.

const AVSubtitle *sub

The input AVSubtitle subtitle to encode.

On error a negative value is returned, on success zero or the number of bytes used from the input buffer.

avcodec_encode_video(), avcodec_encode_audio()

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