void write_webm_file_header(struct WebmOutputContext *webm_ctx,
const vpx_codec_enc_cfg_t *cfg,
- const struct vpx_rational *fps,
stereo_format_t stereo_fmt, unsigned int fourcc,
const struct VpxRational *par) {
mkvmuxer::MkvWriter *const writer = new mkvmuxer::MkvWriter(webm_ctx->stream);