FFmpegCapture *ffmpeg_capture = static_cast<FFmpegCapture *>(card->capture.get());
userdata->has_last_subtitle = ffmpeg_capture->get_has_last_subtitle();
userdata->last_subtitle = ffmpeg_capture->get_last_subtitle();
FFmpegCapture *ffmpeg_capture = static_cast<FFmpegCapture *>(card->capture.get());
userdata->has_last_subtitle = ffmpeg_capture->get_has_last_subtitle();
userdata->last_subtitle = ffmpeg_capture->get_last_subtitle();